WebMcLafferty重排反应（McLafferty rearrangement），又称McLafferty反应、麦氏反应，由美国化学家 Fred McLafferty 在1959年报道。. 质谱分析中的一种重排裂解反应。即具 … WebThe mass spectrum of methyl palmitate (16:0) is -. The molecular ion at m/z = 270 is clearly seen, as is an ion at 239 ( [M-31] +) representing loss of a methoxyl group, and …
Mc lafferty rearrangement - slideshare.net
Web1 jul. 2004 · In this article, dedicated to Professor Fred McLafferty, I wish to recollect early observations with regard to the rearrangement named after him for 1-nitropropane and … Web26 mrt. 2016 · The McLafferty rearrangement can occur on carbonyl compounds (such as ketones and aldehydes) that have a hydrogen on a carbon that's three carbons away … free diapers in boston ma
IUPAC - McLafferty rearrangement (M03772)
WebSuppression of McLafferty rearrangement in the mass spectrometric fragmentation of even-electron systems M. Kraft and G. Spiteller, Chem. Commun. (London), 1967, 943 … WebIn the McLafferty rearrangement, a hydrogen on a carbon three atoms from the C=O is transferred to the carbonyl oxygen and a carbon–carbon bond is broken. This process forms an alkene and the radical cation derived from an enol, which appears as a fragment in the mass spectrum. WebThe mass spectrum of butyrophenone illustrate both alpha cleavage and rearrangement (FIGURE 12-13). Alpha cleavage of the results in the loss of C_3H_7 = 43 mass units from the parent ion at as to give the fragment ion at m/z = 105. A McLafferty rearrangement results in the loss of ethylene, C_2H_4 = 28 mass units, from leaving the ion at m/z ... free diapers in houston