1H and 13C NMR Study of Steric and Electronic Structure of 2-(2-Acylethenyl)-1-vinylpyrroles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

1H and 13C NMR Study of Steric and Electronic Structure of 2-(2-Acylethenyl)-1-vinylpyrroles

Authors:	Ushakov I. A. Afonin A. V. Voronov V. K. Stepanova Z. V. Sobenina L. N. Mikhaleva A. I. Trofimov B. A.

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

Abstract:	According to the ¹H and ¹³C NMR data, the molecule of 2-(2-benzoylethenyl)-1-vinylpyrrole has a nearly planar structure with trans arrangement of the vinyl and oxovinyl groups. The unsaturated fragments give rise to effective conjugation. The vinyl group in 5-substituted 2-(2-acylethenyl)-1-vinylpyrroles strongly deviates from the heteroring plane because of steric effect of the substituent; however, this effect does not change the arrangement of the other unsaturated fragments.

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