for carbonyl as a ligand Metal carbonyl Image carbonyl general.png 150px thumb right Carbonyl group In organic chemistry , a carbonyl group is a functional group composed of a carbon atom double bond double bonded to an oxygen atom C O. The Term carbonyl can also refer to carbon monoxide as a ligand in an inorganic or organometallic complex a metal carbonyl , e.g. nickel carbonyl . The remainder of this article concerns itself with the organic chemistry definition of carbonyl, where carbon and oxygen share a double bond. Carbonyl compounds A carbonyl group characterizes the following types of compounds ... s, Hydroxamic acid hydroxamates , and isocyanate s. Examples of inorganic carbonyl compounds are carbon dioxide and carbonyl sulfide . A special group of carbonyl compounds are 1,3 dicarbonyl compounds ... malonate and acetylacetone . Reactivity File Carbonylgruppe.svg thumb Carbonyl group Oxygen is more ... s Polarity physics polarity . Therefore, the carbonyl carbon becomes electrophile electrophilic , and thus ... hydrogen s of a carbonyl compound are much more acidic 10 sup 3 sup times more acidic than a typical ... Jersey. ISBN 0 02 390171 3. ref This is because a carbonyl is in tautomeric Resonance chemistry resonance ... stable of the carbonyl couplings due to their high resonance stabilization between the nitrogen carbon and carbon oxygen bonds. Carbonyl groups can be redox reduced by reaction with hydride reagents such as Sodium ... reaction where an unsaturated carbon in conjugation with the carbonyl is alkylated instead of the carbonyl ... reaction variant Aldol condensation , a reaction between an enolate and a carbonyl Cannizzaro reaction ... of aldehydes that gives a dimeric ester , Unsaturated carbonyl compounds File Propenal.svg thumb Propenal , Unsaturated carbonyl compounds are an important class of carbonyl compounds with the general structure C sub sub C sub sub C O . In these compounds the carbonyl group is conjugated ... in an aldol reaction and in the Perkin reaction . The carbonyl group draws electrons away from the alkene ... more details
Carbonyl metallurgy is used to manufacture products of Carbonyl iron iron , nickel , steel and other metals. Coatings are produced by vapor plating using metal carbonyl vapors. Carbonyls are metal ligand complexes where carbon monoxide is bonded in a pendant ligand structure to individual atoms of metals such as iron and nickel. Iron carbonyl is stable as iron pentacarbonyl , where five carbon monoxide molecules are pendantly bonded to the iron atom, while nickel carbonyl is stable as nickel tetracarbonyl, which has four carbon monoxide molecules pendantly bonded to the nickel atom. Both can be formed by the exposure of the powered metal to carbon monoxide gas at temperatures of around 75 degrees Celsius. Both the metal carbonyls decompose near 175 ° C, resulting in a vapor plated metallic coating. The thickness of the vapor plated deposit can be increased to desired thicknesses by controlling the amount of metal carbonyl used and the duration of the plating process. Vale Inco produces over 100 million pounds of nickel metal annually by the carbonyl process . The carbonyl process has been used to produce molds in custom shapes for industry. Such molds have been used in plastic molding and other manufacturing techniques. William Jenkin developed many of the techniques and procedures used in carbonyl metallurgy. Carbonyl metallurgy is useful as a low temperature metal coating technique that may well find many applications in the future. gallery File Nickel carbonyl 2D.png Nickel tetracarbonyl File Fe CO 5.png Iron pentacarbonyl gallery See also Chemical vapor deposition Further reading Iron recovery and steel manufacture using carbonyl chemistry http www.space mining.com IRONRECOVERY.htm Beneficiation of asteroidal iron by carbonyl metallurgy http www.space mining.com beneficiation.html William Jenkin inventor of numerous carbonyl processes http www.sitereviewboard.com reviews wc wcjenkin com cache.html Preparation of Iron Carbonyl http www.patentstorm.us patents 7276220 ... more details
Carbonyl iron is a highly pure 97.5 for grade S, 99.5 for grade R iron , prepared by chemical decomposition of purified iron pentacarbonyl . It usually has the appearance of grey powder, composed of spherical microparticles. Most of the impurities are carbon , oxygen , and nitrogen . BASF invented carbonyl iron powder in 1925, ref name technology cite web title Carbonyl Iron Powder Technology publisher BASF url http www.inorganics.basf.com p02 CAPortal en GB portal Carbonyleisenpulver B content Produktgruppen Carbonyleisenpulver Technologies Allgemeine Informationen date 2007 08 08 accessdate 2008 01 01 ref and claims to be the world s leading producer. ref name basf cite web title Carbonyl Iron Powder publisher BASF url http www.inorganics.basf.com p02 CAPortal en GB portal Carbonyleisenpulver 0 content Produktgruppen Carbonyleisenpulver Carbonyleisenpulver?add params MenuAction&id Qu3oA8WDtbcp2zc date 2007 08 08 accessdate 2008 01 01 ref In 1934, BASF was also involved in the development of the very first magnetic tapes used by the AEG Magnetophon tape recorder carbonyl iron became the first magnetic recording oxide although quickly replaced in 1936 by iron oxide . In electronics , carbonyl iron is used to manufacture magnetic core s for high frequency coil s, and in production of some ferrite magnet ferrites . Spherical particles manufactured of carbonyl iron are used as a component of the radar absorbing materials used in military, in stealth technology stealth vehicles for example ... products. Powdered core s made of carbonyl iron have high stability of parameters across a wide ... , carbonyl iron powder is used to treat iron deficiency medicine iron deficiency and as an iron dietary supplement . Particles of carbonyl iron 20 40 suspended in a carrier fluid 60 80 are used as a magnetorheological fluid . See also Carbonyl nickel , a pure nickel prepared by decomposition of nickel carbonyl References Refimprove date December 2007 references Category Iron ... more details
chembox verifiedrevid 396308513 Name Carbonyl fluoride ImageFileL1 Carbonyl fluoride 2D.png ImageSizeL1 125px ImageNameL1 Structure of carbonyl fluoride ImageFileR1 Carbonyl fluoride 3D vdW.png ImageSizeR1 125px ImageNameR1 Space filling model of the carbonyl fluoride molecule IUPACName Carbonyl difluoride OtherNames Fluorophosgene br Carbon difluoride oxide Section1 Chembox Identifiers SMILES FC F O ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 9246 InChI 1 CF2O c2 1 3 4 InChIKey IYRWEQXVUNLMAY UHFFFAOYAE StdInChI Ref stdinchicite correct chemspider StdInChI 1S CF2O c2 1 3 4 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey IYRWEQXVUNLMAY UHFFFAOYSA N CASNo 353 50 4 CASNo Ref cascite correct CAS RTECS FG6125000 UNNumber 2417 Section2 Chembox Properties Formula COF sub 2 sub MolarMass 66.01 g mol sup 1 sup Appearance colorless gas Density 2.698 g dm sup 3 sup gas Solubility ? g 100 mL MeltingPt 111.26 C BoilingPt 84.57 C Section3 Chembox Structure MolShape C sub 2v sub Dipole 0.95 Debye D Section7 Chembox Hazards ExternalMSDS http www.ilo.org public english protection safework cis products icsc dtasht icsc06 icsc0633.htm ICSC 0633 MainHazards Highly toxic FlashPt Non flammable NFPA H 4 NFPA F 0 NFPA R 0 NFPA O RPhrases SPhrases Section8 Chembox Related Function OtherFunctn OtherCpds Phosgene Carbonyl fluoride is the chemical compound with the chemical formula formula COF sub 2 sub . This gas, like its analogue phosgene , is highly toxic. The molecule is planar with C sub 2v sub symmetry group symmetry . Safety The Threshold Limit Value threshold limit value is 2ppm for short term exposure. Unstable in the presence of water. References Unreferenced date September 2007 references Category Inorganic carbon compounds Category Oxofluorides Category Nonmetal halides organohalide stub de Carbonylfluorid it Fluorofosgene hu Karbonil fluorid nl Carbonylfluoride ja sv Karbonylfluorid ... more details
chembox Verifiedfields changed verifiedrevid 396308628 Name Carbonyl sulfide ImageFile Carbonyl sulfide 2D dimensions.png ImageSize 150px ImageName Carbonyl sulfide ImageFile1 Carbonyl sulfide 3D vdW.png ImageSize1 150px ImageName1 Space filling 3D model of carbonyl sulfide IUPACName Carbon oxide sulfide ... MSDS CA carbonyl sulfide.html Carbonyl sulfide MSDS EUIndex Not listed NFPA H NFPA F NFPA R Section8 Chembox Other OtherCpds Carbon dioxide br Carbon disulfide Carbonyl sulfide is the chemical compound ... with an unpleasant odor . It is a linear molecule consisting of a carbonyl group double bond ed to a sulfur atom. Carbonyl sulfide can be considered to be intermediate between carbon dioxide and carbon disulfide , both of which are isoelectronic with it. Carbonyl sulfide decomposes in the presence ... name epa94 http www.epa.gov chemfact s carbns.txt Chemical Summary for Carbonyl sulfide , U.S. Environmental ... Consumption of carbonyl sulphide COS by higher plant carbonic anhydrase CA year 1996 last1 Protoschill ... Urey experiment and it is suggested that carbonyl sulfide played a significant role in the origin of life . ref cite journal title Carbonyl Sulfide Mediated Prebiotic Formation of Peptides author Luke ... pages 283 286 doi 10.1126 science.1102722 pmid 15472077 ref Occurrence Carbonyl sulfide is the most ... history for carbonyl sulfide inferred from Antarctic firn air and air trapped in ice year 2004 last1 Montzka first1 S. A. journal Journal of Geophysical Research volume 109 ref Some carbonyl ... dioxide from volcanic activity can be significant too. ref name Seinfeld 2006 Carbonyl sulfide ... 2002JD002187 title Global budget of atmospheric carbonyl sulfide Temporal and spatial variations ... carbonyl sulfide COS and some similarities to CO2 journal J. Geophys. Res. volume 112 page D09302 ... of COS in the atmosphere to a few years. The largest man made sources of carbonyl sulfide release ... fibers, starch and rubber. ref name hsdb94 The average total worldwide release of carbonyl sulfide ... more details
chembox verifiedrevid 399812315 Name Carbonyl bromide ImageFileL1 Carbonyl bromide.png ImageSizeL1 ImageNameL1 Structural formula of carbonyl bromide ImageFileR1 Carbonyl bromide 3D balls.png ImageSizeR1 110px ImageNameR1 Ball and stick model of carbonyl bromide IUPACName OtherNames Bromophosgene, carbonic dibromide, carbonyl dibromide Reference ref name hand Citation last Lide first David R. author link last2 first2 author2 link publication date date year 1998 title Handbook of Chemistry and Physics edition 87 volume series publication place Boca Raton, FL place publisher CRC Press id isbn 0849305942 doi oclc pages 3 96, 4 50, 5 26 url accessdate ref Section1 Chembox Identifiers CASNo 593 95 3 CASNo Ref CASOther RTECS EINECS Section2 Chembox Properties Formula COBr sub 2 sub MolarMass 187.818 g mol Appearance colorless liquid Density 2.52 g ml at 15 C MeltingPt BoilingPt 64.5 C Solubility reacts with water SolubleOther Section3 Chembox Structure Coordination CrystalStruct Section4 Chembox Thermochemistry DeltaHf 127.2 Kilojoule per mole kJ mol sup 1 sup liquid br 96.2 Kilojoule per mole kJ mol sup 1 sup gas DeltaHc Entropy 309.1 J mol sup 1 sup K sup 1 sup gas HeatCapacity 61.8 J mol sup 1 sup K sup 1 sup gas Section7 Chembox Hazards ExternalMSDS EUIndex Not Listed NFPA H 4 NFPA F 0 NFPA R 1 RPhrases SPhrases FlashPt Section8 Chembox Related OtherAnions OtherCations OtherCpds Carbonyl fluoride br Phosgene Carbonyl bromide , also known as bromophosgene by analogy to phosgene , is an organic chemistry organic chemical compound . It is a decomposition product of halon compounds used in fire extinguishers . ref cite web url http www.osha.gov doc outreachtraining htmlfiles extagent.html title Common Fire Extinguishing Agents author US Occupational Safety and Health Administration date May 1996 work publisher accessdate 2009 11 21 ref Reactions Carbonyl bromide is formed when carbon tetrabromide is melted and concentrated sulfuric acid is added. Even at low temperatures, carbonyl ... more details
chembox Name Vanadium carbonyl ImageFile V CO 6.png ImageSize 200px ImageName Vanadium carbonyl IUPACName hexacarbonylvanadium 0 OtherNames vanadium carbonyl Section1 Chembox Identifiers CASNo 20644 87 5 ChEBI 37857 RTECS Section2 Chembox Properties Formula C sub 6 sub O sub 6 sub V MolarMass 219.00 g mol Appearance blue green crystals br yellow solutions Density Solubility insoluble Solvent other solvents SolubleOther 5 g L hexane br more soluble in dichloromethane MeltingPt decomp BoilingPt sublimes 50 C 15 mm Hg Section3 Chembox Structure Coordination octahedral CrystalStruct orthorhombic Dipole 0 Debye D Section7 Chembox Hazards ExternalMSDS MainHazards CO source RPhrases SPhrases Section8 Chembox Related Function compounds OtherFunctn Chromium carbonyl Cr CO sub 6 sub , V CO sub 6 sub sub sub , Vanadium III chloride VCl sub 3 sub Vanadium carbonyl , also known as vanadium hexacarbonyl , is the inorganic compound with the chemical formula formula V CO sub 6 sub . This highly reactive species is noteworthy from theoretical and scholarly perspectives. It is a rare isolable homoleptic metal carbonyl that is paramagnetic. Most species with the formula M sub x sub CO sub y sub follow the eighteen electron rule 18e rule , whereas V CO sub 6 sub has 17 valence electrons. ref C. Elschenbroich, A. Salzer Organometallics A Concise Introduction 2nd Ed 1992 from Wiley VCH Weinheim. ISBN 3 527 28165 7 ref Synthesis Traditionally V CO sub 6 sub is prepared in two steps via the intermediacy of V CO sub 6 sub sup nowiki &minus nowiki sup . In the first step, VCl sub 3 sub is reduced with metallic sodium under 200 atm CO at 160 C. The solvent for this reduction is typically diglyme , CH sub 3 sub OCH sub 2 sub CH sub 2 sub OCH sub 2 sub CH sub 2 sub OCH sub 3 sub . This tri ether solubilizes sodium salts, akin to the behavior of a crown ether 4 Na VCl sub 3 sub 6 CO 2 diglyme Na diglyme ... Vanadium compounds Category Carbonyl complexes nl Vanadiumhexacarbonyl ja ... more details
File Alcohols from ester via reduction.png thumb synthesis of an alcohol by ester reduction Carbonyl reduction in organic chemistry is the organic reduction of any carbonyl group containing compound by a reducing agent . Typical carbonyl compounds are ketone s , aldehyde s, carboxylic acid s and ester s. A carbonyl group can be reduced to the alcohol or the oxygen atom can be removed altogether, a process called deoxygenation . Many reducing agents are metal hydride s based on boron and aluminum . A second important method is catalytic hydrogenation . ref Advanced organic chemistry Structure and mechanisms Francis A. Carey, Richard J. Sundberg 2nd Ed. ref ref JerryMarch ref . Metal hydride mechanism The reaction mechanism for metal hydride reduction is based on activation of the carbonyl group by the metal followed by nucleophilic addition of hydride. Another general system is catalytic hydrogenation by metal. LiAlH sub 4 sub is more reactive than NaAlH sub 4 sub because the smaller lithium cation is a better Lewis acid . A crown ether reduces reactivity. Alkoxide substitution in metal hydrides increases solubility and selectivity. An example is Red Al . Aldehyde and ketone reduction The reaction product of the reduction of an aldehyde is a primary alcohol and that of a ketone a secondary alcohol . Reagents are lithium aluminium hydride ref Organic Syntheses, Coll. Vol. 7, p.129 1990 Vol. 60, p.25 1981 . http orgsynth.org orgsyn pdfs CV7P0129.pdf Link ref ref Organic Syntheses, Coll. Vol. 6, p.887 1988 Vol. 58, p.12 1978 . http orgsynth.org orgsyn pdfs CV6P0887.pdf Link ref ref Organic Syntheses, Coll. Vol. 6, p.769 1988 Vol. 56, p.101 1977 . http orgsynth.org orgsyn pdfs CV6P0769.pdf Link ref , diisobutylaluminium hydride , sodium borohydride , L selectride , diborane , diazene ... substrate is an unsaturated carbonyl compound, an enone or enal . The 1,2 reduction product an allyl ... Enantioselective reduction of ketones Well known carbonyl reductions in asymmetric synthesis are the Noyori ... more details
may be homoleptic , that is containing only CO ligand s, such as nickel carbonyl Ni ..., for example hydroformylation , and metal carbonyl catalysts are central to its utilization. Metal ... 0.2 shorter than a metal alkyl bond. Bonding modes in clusters The carbonyl ligand engages in a range of bonding modes in metal carbonyl cluster chemistry. ref name Elsch ref P. J. Dyson and J. S. McIndoe, Transition Metal Carbonyl Cluster Chemistry, Gordon & Breach Amsterdam 2000 . ISBN 9056992899 ... rhodium carbonyl clusters journal Vibrational Spectroscopy volume 41 year 2006 pages 101 111 doi 10.1016 j.vibspec.2006.01.013 ref class wikitable carbonyl sub CO sub , sub 1 sub cm sup 1 sup ... 2045, 2075 1819 Synthesis Although nickel carbonyl and iron pentacarbonyl form upon treatment of the metals ... 10.1039 a807277i ref Compounds Most metal carbonyl complexes contain a mixture of ligands. Examples ... 12 sub , which is unknown. The 17 VE Vanadium carbonyl V CO sub 6 sub is however well known. Group 6 element s with 6 valence electrons form metal carbonyls Chromium carbonyl Cr sub sub CO sub 6 sub ... 6 6x2 18 electrons . Group 7 element s with 7 valence electrons form metal carbonyl dimers Dimanganese ... carbonyl dimers M sub 2 sub CO sub 8 sub . In fact the cobalt derivative of this octacarbonyl is the only ... is sensitive to oxygen. Group 10 element s with 10 valence electrons form metal carbonyls Nickel carbonyl ... derivatives Ti CO sub 6 sub sup 2 sup . ref cite journal author Ellis, J. E. title Metal Carbonyl Anions ... 10 metal carbonyl. Co CO sub 4 sub sup sup is the best studied member. Large anionic clusters of Ni ... Superelectrophilic Metal Carbonyl Cations of Iron II , Ruthenium II , and Osmium II . Part ... carbonyl hydrides class wikitable align right Metal Carbonyl hydride pK sub a sub Tetracarbonylhydrocobalt ... above. These anions can be protonated to give the corresponding metal carbonyl hydrides. The neutral metal carbonyl hydrides are often volatile and can be quite acidic. ref cite journal last Pearson ... more details
3D model of carbonyl sulfide . Summary Information Description 3D model of carbonyl sulfide . Source Made by myself using Accelrys. Date 7 December 2010 Author YOSF0113 Permission other versions PD self date December 2010 ... more details
Unreferenced auto yes date December 2009 A tetrahedral carbonyl addition compound is an organic compound formed by nucleophilic addition to a carbonyl compound such as an aldehyde or ketone . This provides the carbon with four temporary bonds, one of which is broken when the leaving group leaves, and another which is formed by formation of a double bond. DEFAULTSORT Tetrahedral Carbonyl Addition Compound Category Reactive intermediates Organic compound stub ... more details
Summary This illustrates a Nucleophilic substitution reaction drawn shorthand. Licensing self GFDL cc by sa 2.5,2.0,1.0 migration relicense Now commons NowCommons 1 File Substitution at carbonyl group.png 2 no date 2011 03 16 ... more details
enzyme Name carbonyl reductase NADPH EC number 1.1.1.184 CAS number 89700 36 7 IUBMB EC number 1 1 1 184 GO code 0004090 image width caption Image Carbonyl reductase 1WMA.png thumb Ribbon diagram of human carbonyl reductase 1, in complex with Nicotinamide adenine dinucleotide phosphate NADPH and a small molecule enzyme inhibitor inhibitor not shown . From PDB 1WMA . In enzymology , a carbonyl reductase NADPH EC number 1.1.1.184 is an enzyme that catalysis catalyzes the chemical reaction R CHOH R NADP sup sup math rightleftharpoons math R CO R NADPH H sup sup Thus, the two substrate biochemistry substrates of this enzyme are R CHOH R and nicotinamide adenine dinucleotide phosphate NADP sup sup , whereas its 3 product chemistry products are R CO R , nicotinamide adenine dinucleotide phosphate NADPH , and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the CH OH group of donor with NAD or NADP as acceptor. The systematic name of this enzyme class is secondary alcohol NADP oxidoreductase . Other names in common use include aldehyde reductase 1 , prostaglandin 9 ketoreductase , xenobiotic ketone reductase , NADPH dependent carbonyl reductase , ALR3 , carbonyl reductase , nonspecific NADPH dependent carbonyl reductase , aldehyde reductase 1 , and carbonyl reductase NADPH . This enzyme participates in arachidonic acid metabolism , and has recently been shown to catabolize S Nitrosoglutathione, as a means to degrade NO in an NADPH dependent manner. Structural studies As of late 2007, 4 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1CYD , PDB link 1WMA , PDB link 2HRB , and PDB link 2PFG . References reflist 1 cite journal author Ahmed NK, Felsted RL, Bachur NR date 1978 title Heterogeneity of anthracycline antibiotic carbonyl reductases in mammalian ... title Purification and properties of an NADPH dependent carbonyl reductase from human brain. Relationship ... more details
chembox verifiedrevid 414048120 ImageFile Carbonyl cyanide p trifluoromethoxyphenylhydrazone.svg ImageSize 250px IUPACName OtherNames Reference ref http pubchem.ncbi.nlm.nih.gov summary summary.cgi?cid 3330&loc ec rcs FCCP Compound Summary , PubChem . ref Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 3213 InChI 1 C10H5F3N4O c11 10 12,13 18 9 3 1 7 2 4 9 16 17 8 5 14 6 15 h1 4,16H InChIKey BMZRVOVNUMQTIN UHFFFAOYAT SMILES1 FC F F Oc1ccc cc1 N N C C N C N ChEMBL Ref ebicite correct EBI ChEMBL 457504 StdInChI Ref stdinchicite correct chemspider StdInChI 1S C10H5F3N4O c11 10 12,13 18 9 3 1 7 2 4 9 16 17 8 5 14 6 15 h1 4,16H StdInChIKey Ref stdinchicite correct chemspider StdInChIKey BMZRVOVNUMQTIN UHFFFAOYSA N CASNo 370 86 5 PubChem 3330 SMILES C1 CC CC C1NN C C N C N OC F F F MeSHName FCCP Section2 Chembox Properties Formula C sub 10 sub H sub 5 sub F sub 3 sub N sub 4 sub O MolarMass 254.16811 g mol Appearance Density MeltingPt BoilingPt Section3 Chembox Hazards Solubility MainHazards FlashPt Autoignition Carbonyl cyanide p trifluoromethoxyphenylhydrazone FCCP is an ionophore that is a mobile ion carrier . It referred to as an uncoupling protein uncoupling agent because it disrupts Adenosine triphosphate ATP ATP synthase synthesis by transporting hydrogen ions through a cell membrane before they can be used to provide the energy for oxidative phosphorylation . ref http www.nlm.nih.gov cgi mesh 2007 MB cgi?mode &term FCCP MeSH Descriptor Data , Medical Subject Headings MeSH . ref It is a nitrile and hydrazone . References reflist See also Carbonyl cyanide m chlorophenyl hydrazone CCCP Category Ionophores Category Nitriles biochem stub it Carbonil cianuro p trifluorometossifenil idrazone ja p ... more details
Hydrocyanation of unsaturated carbonyl compounds is a special case of the Michael reaction which can lead to cyanoketones, cyano cyanohydrins, or vinyl cyanohydrins. Fine tuning reaction conditions allows access to any of these products. ref Nagata, W. Yoshioka, M. Org. React. 1977 , 25 , 255. doi http dx.doi.org 10.1002 0471264180.or025.03 10.1002 0471264180.or025.03 ref Introduction Hydrocyanation refers to the addition of the elements of hydrogen and cyanide across a multiple bond. When the multiple bond is polarized by an electron withdrawing group, selective addition results. However, when the electron withdrawing group is a carbonyl, the possibility of 1,2 direct addition to the carbonyl group exists. Methodological advances now permit access to both direct and conjugate addition products. span style float right padding right 50px padding top 30px 1 span center File CNgen.png 357px center Diastereoselectivity can be achieved in prochiral , conformationally restricted substrates. Catalytic, enantioselective methods, however, are rare. ref Sammis, G.M. Danjo, H. Jacobsen, E.N. ... prior to the introduction of the carbonyl compound, a cyanoaluminate anion forms and acts as the active cyanating agent after activation of the carbonyl compound by a proton . Formation of the dicyano ... are used, both carbonyl activation and nucleophilic attack of cyanide are facilitated by the organoaluminum ... addition depends on a number of factors. The structure of the carbonyl compound is important ... alone is not reactive enough to add to carbonyl groups as a result, base catalysis is necessary ... to the carbonyl substrate. Michael addition of cyanated products to the unsaturated carbonyl starting ... CNAddScope1.png center Beyond a requirement for base stable functionality, a wide variety of carbonyl .... Ann. Chem. 1951 , 572 , 23. ref and other carbonyl derivatives also undergo conjugative hydrocyanation ... cyano carbonyl compounds can be converted to a number of steroidal products. span style ... more details
Carbonyl oxidation with hypervalent iodine reagents involves the functionalization of the position of carbonyl compounds through the intermediacy of a hypervalent iodine III enolate species. This electrophilic intermediate may be attacked by a variety of nucleophiles or undergo rearrangement or elimination. ref Moriarty, R. M. Prakash, O. Org. React. 1999 , 54 , 273. doi http dx.doi.org 10.1002 0471264180.or054.02 10.1002 0471264180.or054.02 ref Introduction Hypervalent iodine III compounds are attractive oxidizing agents because of their stability and selectivity. In the presence of enolizable carbonyl compounds, they are able to accomplish oxidative functionalization of the position. A key iodine III enolate intermediate forms, which then undergoes either nucleophilic substitution functionalization ... of carbonyl oxidation by iodine III reagents varies as a function of substrate structure and reaction ... at the carbonyl carbon is faster than attack at the carbon. Iodine displacement is actually accomplished intramolecularly by the carbonyl oxygen, which becomes the hydroxyl oxygen in the product ... carbonyl complex, it was shown that displacement of iodine likely occurs with inversion of configuration ... CHIStereo1.png center Studies on the oxidation of unsaturated carbonyl compounds also provide stereochemical ... center Oxytosylation facilitates the elaboration of carbonyl compounds into a variety of functionalized ... undergo many of the same reactions as carbonyl compounds in the presence of iodine III reagents ... hypervalent iodine oxidations of carbonyl compounds. Aryl migration may occur under acidic conditions ... carbonyl compounds in the absence of functional handles. For instance, dehydrogenation is employed ... center File CHISynth.png center Comparison with Other Methods Few compounds that oxidize carbonyl compounds ... for the hydroxylation of carbonyl compounds may employ toxic organometallic compounds such as lead ... peroxide equation 14 . The most popular method for the hydroxylation of carbonyl compounds is the Rubottom ... more details
chembox verifiedrevid 414048027 ImageFile Carbonyl cyanide m chlorophenyl hydrazone.svg ImageSize IUPACName 3 chlorophenyl hydrazono malononitrile OtherNames Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 2504 KEGG Ref keggcite correct kegg KEGG C11164 InChI 1 C9H5ClN4 c10 7 2 1 3 8 4 7 13 14 9 5 11 6 12 h1 4,13H InChIKey UGTJLJZQQFGTJD UHFFFAOYAQ ChEMBL Ref ebicite correct EBI ChEMBL 224214 StdInChI Ref stdinchicite correct chemspider StdInChI 1S C9H5ClN4 c10 7 2 1 3 8 4 7 13 14 9 5 11 6 12 h1 4,13H StdInChIKey Ref stdinchicite correct chemspider StdInChIKey UGTJLJZQQFGTJD UHFFFAOYSA N CASNo Ref cascite correct CAS CASNo 555 60 2 PubChem 2603 SMILES Clc1cc N N C C N C N ccc1 MeSHName CCCP Section2 Chembox Properties C 9 H 5 Cl 1 N 4 MolarMass 204.616 g mol Appearance Density MeltingPt BoilingPt Section3 Chembox Hazards Solubility MainHazards FlashPt Autoignition Carbonyl cyanide m chlorophenyl hydrazone CCCP , is a chemical inhibitor of oxidative phosphorylation . It is a nitrile , hydrazone and ionophore . In general, CCCP causes the gradual destruction of living cells and death of the organism. ref name park97 cite journal author J.W. Park coauthors S.Y. Lee, J.Y. Yang, H.W. Rho, B.H. Park, S.N. Lim, J.S. Kim, H.R. Kim year 1997 title Effect of carbonyl cyanide m chlorophenylhydrazone CCCP on the dimerization of lipoprotein lipase. url http www.ncbi.nlm.nih.gov pubmed 9030190 journal Biochimica et Biophysica Acta volume 1344 issue 2 pages 132 8 ref ref name brod99 cite journal author D. G kov coauthors B. Brodsk , A. Holoubek, K. Sigler year 1999 title Factors and processes involved in membrane potential build up in yeast diS C3 3 assay url http apps.isiknowledge.com full record.do?product UA&search mode GeneralSearch&qid 1&SID S1OH84h3mBDFNnOFaen&page 1&doc 1&colname WOS journal The International Journal of Biochemistry & Cell Biology volume 31 issue 5 pages 575 584 doi 10.1016 S1357 2725 99 00002 3 ref The CCCP affects ... more details
Wikify date January 2011 Orphan date January 2011 The Flippin Lodge angle is one angle of attack of a nucleophile on a carbonyl, R1 C O R2, or related pi system, that, with the B rgi Dunitz angle fully describes the angular geometry of that attack. One can describe a vector that is created by the reactive atom of the nucleophile, Nu , and the carbonyl carbon. The B rgi Dunitz angle describes the angle made between this vector and the plane determined by the carbonyl C O and its R1 and R2 substituents specifically, it is the Nu C O angle where C O lies in the described plane. This angle is theorized and observed to be an obtuse angle 90 deg , originally set at 105 5 deg, with more recent estimates set at 107 deg. This angle, sometimes referred by the Greek letter theta, can be understood as a measure of the degree to which the attack of the nucleophile is necessarily offset from directly above i.e., perpendicular to the carbonyl carbon in its plane, for reasons arising from the molecular orbitals of nucleophile and carbonyl. A further line can be described which contains the C O bond of the carbonyl, and therefore lies in the plane described above this line bisects the R1 C R2 angle of the carbonyl. The Flippin Lodge angle is the angle between a projection onto the R1 C O R2 plane of the Nu C vector described above and this line bisecting the R1 C R2 angle of the carbonyl. This angle, sometimes referred by the Greek letter psi, can be understood as a measure of the degree to which the attack of the nucleophile is offset toward R1 or R2 from directly behind the carbonyl carbon i.e., offset from the second, perpendicular plane also containing the C O bond of the carbonyl . The reasons for such offset lie in attractions and repulsions steric, electrostatic between the nucleophile, and the R1 and R2 substituent structures. For images making this description clearer, the reference should be consulted. References Fleming, Ian 2010 Molecular Orbitals and Organic Chemical Re ... more details
Yhteenveto LiAlH4 reduction of ester with acetal protection of another carbonyl Editor s note There is a mistake in the first step of the reaction pictured. Addition of LAH will not oxidize the para hydroxide group to a carboxyl group. KMnO4 will do that. Licensing GFDL self with disclaimers migration relicense Category Chemical structures ... more details
Amide group may refer to Amide , an organic functional group characterized by a carbonyl group linked to a nitrogen atom, or a compound that contains this functional group Peptide bond , a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amine group of the other molecule disambig ... more details
a benzenediol and a carboxylate sup 3 sup . Overall, the carbonylcarbonyl group is oxidized, and the hydrogen ... reaction addition of a hydroperoxide ion anion to the carbonyl carbon , forming a Tetrahedral carbonyl ... carbonyl carbon forms a second tetrahedral intermediate 4 , which collapses, eliminating a phenol ... addition of hydroperoxide to the carbonyl carbon and 1,2 aryl migration sup 5 sup . Therefore ... electrophilicity of the carbonyl carbon, and the speed of 1,2 aryl migration. The alkyl substituents on the carbonyl carbon, the relative positions of the hydroxyl and carbonyl groups on the aryl ring ... than phenyl ketones because the ketone carbonyl carbon is less electrophilic than the aldehyde carbonyl carbon sup 3 sup . The difference can be mitigated by increasing the temperature of the reaction mixture sup 9 sup . Relative positions of hydroxyl and carbonyl groups File Hydrogen bond stabilization ... hydrogen bond can form between the hydroxyl hydrogen and the carbonyl oxygen , stabilizing a resonance chemistry resonance structure with positive electric charge charge on the carbonyl carbon, thus increasing the carbonyl carbon s electrophilicity 7 . Lacking this stabilization, the carbonyl ... to the carbonyl group concentrate electron density at the aryl carbon chemical bond bonded to the carbonyl ... donating groups ortho or para to the carbonyl group increases electron density at the migrating carbon ... meta to the carbonyl group does not change electron density at the migrating carbon because unsubstituted ... withdrawing groups ortho or para to the carbonyl decreases electron density at the migrating ... oxygen. When the hydroxyl group is ortho or para to the carbonyl group, deprotonation increases ... peroxide, and catalysis catalytic sulfuric acid , the carbonyl oxygen is protonation protonated 14 , after which hydrogen peroxide adds as a nucleophile to the carbonyl carbon, forming a tetrahedral ... to the carbonyl carbon forms another tetrahedral intermediate 19 . Following a second intramolecular ... more details
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