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Chemical ionization induced fragmentations of 2‐phenyl‐1,3,2‐dioxaborolanes and 2‐phenyl‐1,3,2‐dioxaborinanes
Author(s) -
Hancock Richard A.,
Weigel Helmut
Publication year - 1979
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.1210140406
Subject(s) - reagent , chemistry , electron ionization , chemical ionization , ionization , medicinal chemistry , ion , hydrocarbon , organic chemistry
Chemical ionization induced fragmentations (with 2‐methylpropane as reagent gas) of 4‐methyl‐ and 4,5‐dimethyl‐2‐phenyl‐1,3,2‐dioxaborolane and 4‐methyl‐2‐phenyl‐1,3,2‐dioxaborinane gave in each case two fragments, a hydrocarbon ion and metaboric acid. Propeae and thence metaboric acid are eliminated from 4,6‐dimethyl‐2‐phenyl‐1,3,2‐dioxaborinane. The mechanisms of the fragmentations are discussed. Under the conditions used 2‐phenyl‐1,3,2‐dioxaborolane and 2‐phenyl‐1,3,2‐dioxaborinane do not fragment.