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Mass spectral study of substituted methyl ( E )‐and ( Z )‐cinnamates under 1,2‐dibromoethane chemical ionization
Author(s) -
Vairamani M.,
Saraswathi M.,
Rao G. K. Viswanadha
Publication year - 1991
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210260915
Subject(s) - cinnamates , chemistry , adduct , mass spectrum , ionization , chemical ionization , methanol , ring (chemistry) , ion , medicinal chemistry , alkylation , photochemistry , organic chemistry , catalysis
Dibromoethane chemical ionization mass spectra of ten pairs of methyl ( E )‐ and ( Z )‐cinnamates were studied. C 2 H 4 Br + ion forms stable adducts with E ‐isomers and the adducts of Z ‐isomers show preferential loss of methanol. The observed results suggest that the probability of ring alkylation is greater than with the carbonyl group.