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Chemical ionization mass spectrometry of crown ether acetals using isobutane as reagent gas
Author(s) -
Hancock Richard A.,
Walder Ray,
Weigel Helmut,
Gold Victor,
Sghibartz Cristian M.
Publication year - 1983
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.1210180907
Subject(s) - isobutane , mass spectrometry , chemistry , chemical ionization , reagent , ether , crown ether , ion , ionization , organic chemistry , chromatography , catalysis
Isobutane chemical ionization mass spectrometry of crown ether acetals (M), derived from ethanal, give [MH] + ions from which species corresponding to 44 u are successively eliminated. Mechanisms are presented in which these units correspond to (i) ethanal and (ii) oxirane. An accompanying process is the elimination of ethyne. Similar reactions occur in the chemical ionization mass spectrometry of benzo crown ether acetals.