The main fragmentation processes after electron ionization of butyl methyl and butyl ethyl sulfides are rationalized by the intermediacy of the ion neutral complex [RSH . methylcyclopropane](+.) as demonstrated by extensive labeling and collision activation studies. Copyright (C) 1999 John Wiley & Sons, Ltd.
A McLafferty rearrangement in an even-electron system: C3H6 elimination from the α-cleavage product of tri-n-butylamine
作者:Herbert Budzikiewicz、Peter Bold
DOI:10.1002/oms.1210260808
日期:1991.8
AbstractIt is shown by deuterium labelling, linked‐scan measurements and collision activation that the [M‐C3H7˙]+ (α‐cleavage) ion in the electron impact ionization spectrum of tributylamine loses C3H6 with transfer of one hydrogen specifically from the γ‐position. The experimental data point towards a mechanism which involves the intermediate formation of a distonic diradical ion from an excited α‐cleavage ion which then eliminates the neutral alkene.
BOULANGER Y.; LEITCH L. C., J. LABELLED COMPOUNDS AND RADIOPHARM., 1981, 18, NO 8, 1197-1204
作者:BOULANGER Y.、 LEITCH L. C.
DOI:——
日期:——
WEISKE, T.;SCHWARZ, H., CHEM. BER., 1983, 116, N 1, 323-347