Reaction of 3-Arylaminobenzofuro-, 3-Arylaminobenzothieno-, and 3-Arylaminoindolo[2,3-c]pyrylium Salts with Nucleophilic Reagents
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- 作者：V. S. Tolkunov ; Yu. B. Vysotsky ; O. A. Gorban鈥?/a> ; S. V. Shishkina ; O. V. Shishkin and V. I. Dulenko
- 关键词：3 ; arylaminobenzothieno[2 ; 3 ; c]pyrylium ; 3 ; arylaminobenzofuro[2 ; 3 ; c]pyrylium ; 3 ; arylaminoindolo[2 ; 3 ; c]pyrylium ; 2 ; N ; aryl ; 1 ; methylhetero[2 ; 3 ; c]pyridin ; 3(2H) ; ones ; recyclization
- 刊名：Chemistry of Heterocyclic Compounds
- 出版时间：April 2005
- 出版年：2005
- 期刊代码：19_00093122
- 类别：mat
- 卷：41
- 期：4
- 页码：515-525
- 数据来源：sp
摘要
We have studied the reactions of 3-arylaminobenzofuro-, 3-arylaminobenzothieno-, and 3-arylaminoindolo[2,3-c]pyrylium salts with ammonium acetate, primary amines, and hydrazine hydrate. In an alcoholic medium, primary amines and hydrazine hydrate open up the pyrylium ring to form arylamides of 2-(N-benzylmethylketimine)hetaryl-3-acetic acids or the corresponding hydrazones, where further heterocyclization does not occur. Upon treatment with ammonium acetate in acetic acid, 2-aryl-1-methylhetero[2,3-c]pyridin-3-(2H)-ones are formed along with their 2-unsubstituted analogs.