Premium
Negative‐ion fragmentations of deprotonated heterocycles. The pyrazole and imidazole ring systems
Author(s) -
Adams Gregory W.,
Bowie John H.,
Hayes Roger N.
Publication year - 1992
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290060111
Subject(s) - chemistry , imidazole , pyrazole , deprotonation , ring (chemistry) , stereochemistry , fragment (logic) , ion , organic chemistry , algorithm , computer science
Imidazole and pyrazole deprotonate preferentially at the 1‐position, and a number of fragmentations are best rationalized as occurring through common ring‐opened intermediate − NHCHCHCN. C ‐Methylomidazoles and pyrazoles fragment similarly.