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Benzazoles XIII —determination of the E and Z configuration of isomeric 2‐(2‐benzimidazolyl)‐di‐ and ‐tetra‐hydrothiophenes by IR, 1 H and 13 C NMR spectroscopy
Author(s) -
Sohár P.,
Mányai Gy.,
Hideg K.,
Hankovszky H. O.,
Lex L.
Publication year - 1980
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270140209
Subject(s) - benzimidazole , tetra , diastereomer , chemistry , stereochemistry , nuclear magnetic resonance spectroscopy , spectroscopy , medicinal chemistry , organic chemistry , physics , quantum mechanics
The configuration of the diastereomeric pairs of 2‐(3‐hydroxy‐3‐methyl‐5‐phenyl‐2,3‐dihydrothiophen‐2‐yl)benzimidazole (1a,1b) and 2‐(3‐hydroxy‐3‐methyltetrahydrothiophen‐2‐yl)benzimidazole (2a, 2b), as well as that of the acyl and diacyl derivatives of 2a and 2b, and the structure of the dehydrated products formed by heating 1a or 1b, and 2a or 2b, were determined by IR, 1 H and 13 C NMR spectroscopy.