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Benzazoles XIII—determination of the E and Z configuration of isomeric 2-(2-benzimidazolyl)-di- and -tetra-hydrothiophenes by IR, 1H and 13C NMR spectroscopy

✍ Scribed by P. Sohár; Gy. Mányai; K. Hideg; H. O. Hankovszky; L. Lex

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
335 KB
Volume
14
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

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.

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