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Conformations of monoacyl and 1,3‐diacylbenzimidazoline‐2‐thiones and dihydrobenzimidazoles
Author(s) -
Ibrahim Mustafa R.,
Jarrar Adil A.,
Sabri Salim S.
Publication year - 1975
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570120102
Subject(s) - chemistry , stereochemistry
The endo confrontation of monoacyl and 1,3‐diacylbenzimidazoline‐2‐thiones is predominant at ambient temperatures. Nmr temperature‐dependent studies suggest that this is also true over a wide range of temperatures. In agreement with previous results (6) the exo‐endo conformation in 1,3‐diacyl‐1,2‐dihydrobenzimidazoles is generally the predominant one.