Spatial and Electronic Structure of 2-(2-Furyl)- and 2-(2-Thienyl)pyrroles According to 1H and 13C NMR Data期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Spatial and Electronic Structure of 2-(2-Furyl)- and 2-(2-Thienyl)pyrroles According to 1H and 13C NMR Data

Authors:	Afonin A V Kuznetsova S Yu Ushakov I A Voronov V K Mikhaleva A I Shmidt E Yu

Institution:	(1) Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, 664033, Russia;(2) Irkutsk State Technical University, Irkutsk, 664033, Russia

Abstract:	In 2-(2-furyl)- and 2-(2-thienyl)pyrroles the heterocycles are in efficient ,-conjugation. The presumably possible for this compounds intramolecular hydrogen bond N-H···O or N-H···S is lacking. The COCF₃ group in position 2 of the pyrrole ring is syn-oriented with respect to pyrrole fragment, and the orientation is fixed by an intramolecular hydrogen bond N-H···O. However no bifurcating hydrogen bonds arise in the molecules containing COCF₃ group.

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