A novel atom-efficient, one-pot synthesis of sulfonylguanidines and sulfamoylguanidines
摘要:
An expedient one-pot procedure for the atom-efficient production of a variety of sulfonylguanidines and sulfamoylguanidines under mild conditions is described. The route constitutes an important alternative to current methods. (C) 2011 Elsevier Ltd. All rights reserved.
1-(Methyldithiocarbonyl)imidazole: a Useful Thiocarbonyl Transfer Reagent for Synthesis of Substituted Thioureas
作者:Pramod K. Mohanta、Sanchita Dhar、S.K. Samal、H. Ila、H. Junjappa
DOI:10.1016/s0040-4020(99)01026-1
日期:2000.1
1-(Methyldithiocarbonyl)imidazole 1 and its N-methyl quaternary salt 2 have been shown to be efficient methyldithiocarbonyl and thiocarbonyl transfer reagents for the synthesis of dithiocarbamates, symmetrical and unsymmetrical mono-, di- and tri-substituted thioureas in high yields under mild and simple non-hazardous reaction conditions.
作者:Jin Ku Cho、Peter D. White、Wolfgang Klute、Tony W. Dean、Mark Bradley
DOI:10.1039/b315426b
日期:——
Self-indicating methylisocyanate resin, which functions as both a scavenger and an indicator for amines, was used for in-situ reaction monitoring and purification of a urea based library.
自指示性甲基异氰酸酯树脂既作为胺的捕捉剂又作为指示剂,用于尿素基库的原位反应监测和纯化。
A highly efficient one-pot method for the synthesis of thioureas and 2-imino-4-thiazolidinones under microwave conditions
作者:Chi-Min Chau、Tzu-Jung Chuan、Kuan-Miao Liu
DOI:10.1039/c3ra46270f
日期:——
A one-pot synthesis of symmetrical and unsymmetrical substituted thioureas and 2-imino-4-thiazolidinones from simple starting materials under microwave irradiation and solventless conditions without base additives is presented. Various di- and trisubstituted thioureas are obtained in good yields in a few minutes. The sequential, three-component, one-pot synthesis of 2-imino-4-thiazolidinone derivatives is also studied, with satisfactory results obtained.