Role of quaternaryammonium permanganates in the synthesis of substituted guanidines—a comparative study
摘要:
Quaternaryammonium permanganate transforms 1,3 -diarylthioureas in the presence of an amine to the respective trisubstituted guanidines in excellent yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Role of quaternaryammonium permanganates in the synthesis of substituted guanidines—a comparative study
作者:Natarajan Srinivasan、Krishnamurthy Ramadas
DOI:10.1016/s0040-4039(00)01956-0
日期:2001.1
Quaternaryammonium permanganate transforms 1,3 -diarylthioureas in the presence of an amine to the respective trisubstituted guanidines in excellent yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
o-Iodoxybenzoic acid mediated oxidative condensation: synthesis of guanidines using 1,-3-disubstituted thiourea precursors
作者:Prasad S. Dangate、Krishnacharya G. Akamanchi
DOI:10.1016/j.tetlet.2012.09.130
日期:2012.12
An efficient and mild oxidative condensation procedure using o-iodoxybenzoic acid and triethylamine or ammonia as base has been developed for the synthesis of guanidines starting from easily synthesizable 1,3-disubstituted thioureas and amines or ammonia. (C) 2012 Elsevier Ltd. All rights reserved.