WebThe McLafferty Rearrangement: A Personal Recollection Nico M. M. Nibbering Laser Center and Chemistry Department, Vrije Universiteit, Amsterdam, The Netherlands In … Web2 jul. 2007 · The stepwise and concerted pathways for the McLafferty rearrangement of the radical cations of butanal (Bu +) and 3-fluorobutanal (3F-Bu +) are investigated with density functional theory (DFT) and ab initio methods in conjunction with the 6 …
Mass spectroscopy and fragmentation rule - SlideShare
WebMcLafferty rearrangement: In mass spectrometry, the fragmentation of a carbonyl-containing radical cation via β-cleavage to produce an enol radical cation and an alkene. … Web9 jul. 2008 · The MS/MS results showed that the loss of fragment 72 or 86 was induced by McLafferty-type rearrangement from the Glu or esterified Glu. The mechanism of loss … trophy icon transparent background
The mclafferty rearrangement: a personal recollection
WebThe latter new ion, which is produced by a McLafferty rearrangement, has ΔfH°=604kJ/mol, obtained from G3 calculations. The four competing processes for metastable [CH3COCOCH2CH3]+, ... Webこのような場合をMcLaffertyは 無差別転位(random -rearrangement)15)と 呼んだ。 たとえば1CD3-2CD2 ・3CD2・ 4CH3の スペクトルを測定すると C3HD6(3.1%),C3H2D2C3 .8%)CZHD4(1.1%) C3D7(20%),C2D5(3.2%)(total ion:量を100%と する) のように種々のピークが観察され,C1-C2,C1-C3,C1-C4 更にはC2-C3間 のHとDの 交換がおこっているこ … WebIn 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 the methyl … trophy icon vector