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Mass spectrometric studies—II: Mass spectrometric studies of maleimides and benzaldazine adducts. Identification of solid mixtues
Author(s) -
Tam S. W.
Publication year - 1973
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.1210070511
Subject(s) - imide , maleimide , adduct , chemistry , mass spectrum , mass spectrometry , medicinal chemistry , polymer chemistry , organic chemistry , chromatography
It has been found by mass spectrometric studies that the so‐called ‘1:1‐adduct’ formed by N‐( n butyl)maleimide and benzaldazine, is in fact a solid mixture of one part bis ‐imide L and one part benzaldazine. Bis ‐imide L is one of the three stereoisomeric products obtained by the addition of two mole of N‐( n ‐butyl)malemide and one mole of benzaldazine. The three stereoisomeric bis ‐imides gave identical mass spectra. Mass spectra of bis ‐imide M and bis ‐imide M‐ d 2 are discussed, and confirm the proposed structures of perhydroprazolo‐pyrazole derivatives for these 1:2‐adducts.