S. Dua et al., THE COLLISION-INDUCED FRAGMENTATIONS OF DEPROTONATED ALLYL ALCOHOL AND ITS MONOMETHYL DERIVATIVES, Rapid communications in mass spectrometry, 7(5), 1993, pp. 336-338
Deprotonated allyl alcohol undergoes collision-induced losses of H-2,
CH2O and C2H4 with minor hydrogen randomization occurring prior to or
during these dissociations. A further fragmentation involves loss of m
ethane: labelling studies (with CH2=CH-CD2O-) suggest that this loss i
s preceded by the equilibration CH2=CH-CD2O- half arrow right over hal
f arrow left CD2=CH-CH2O-. The methyl homologues of allyl alcohol form
isomeric C3H5- ions: the charge reversal spectra of these isomers con
firm that CH2=CH-CH2-, CH2=CBAR-Me and HCBAR=CH-Me are separate specie
s, and also suggest that all three of the corresponding positive ions
are formed on the charge-reversal time-scale.