Acyl and sulfonyl derivatives of 3,5-diamino-1-r-1,2,4-triazoles

被引:0
|
作者
Chernyshev V.M. [1 ]
Rakitov V.A. [1 ]
Taranushich V.A. [1 ]
Blinov V.V. [1 ]
机构
[1] South-Russian State Technical University
关键词
1,2,4-triazole; 3,5-diacylamino-1,2,4-triazoles; 3,5-diamino-1,2,4-triazole; 3-acylamino-5-amino-1-R-1,2,4-triazoles; 5-amino-3-sulfonylamino-1-R-1,2,4- triazoles,amino-; Acylation; Regioselectivity; Structure;
D O I
10.1007/s10593-005-0293-2
中图分类号
学科分类号
摘要
3-Acylamino-5-amino-1-R-1,2,4-triazoles are formed regioselectively on acylating 3,5-diamino-1-R-1,2,4-triazoles with an equimolar amount of anhydrides, carboxylic acid chlorides, and sulfonyl chlorides. With an excess of anhydride and carboxylic acid chloride 3,5-diacylamino-1-R-1,2,4-triazoles are formed. 3-Acylamino-5-amino-1-R-1,2,4-triazoles do not interact with sulfonyl chlorides. The higher reactivity of the 3-amino group towards acylating agents is determined by electronic and not steric factors. ©2005 Springer Science+Business Media, Inc.
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页码:1139 / 1146
页数:7
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