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.
Green Process Development for the Synthesis of Aliphatic Symmetrical <i>N,N′</i>-Disubstituted Thiourea Derivatives in Aqueous Medium
作者:Asha D. Jangale、Priyanka P. Kumavat、Yogesh B. Wagh、Yogesh A. Tayade、Pramod P. Mahulikar、Dipak S. Dalal
DOI:10.1080/00397911.2014.960939
日期:2015.1.17
Abstract A highly efficient green process for the synthesis of N,N′-disubstituted aliphatic thiourea derivatives using primary aliphatic amines and carbon disulfide in aqueous medium at room temperature via a nonisothiocyanate route is described. This protocol illustrates the rapid preparation of N,N′-disubstituted aliphatic thiourea derivatives in excellent yields with some advantages such as no catalyst
Green Process Development for the Synthesis of Aliphatic Symmetrical<i>N,N</i>′-Disubstituted Thiourea Derivatives in Aqueous Medium
作者:Asha D. Jangale、Priyanka P. Kumavat、Yogesh B. Wagh、Yogesh A. Tayade、Pramod P. Mahulikar、Dipak S. Dalal
DOI:10.1080/00397911.2014.963876
日期:2015.2
A highly efficient green process for the synthesis of N,N-disubstituted aliphatic thiourea derivatives using primary aliphatic amines and carbon disulfide in an aqueous medium at room temperature via a nonisothiocyanate route is described. This protocol illustrates the rapid preparation of N,N-disubstituted aliphatic thiourea derivatives in excellent yields with some advantages such as no catalyst and simple workup without any side product formation. Moreover, the new route is concise, does not require chromatography, and is adaptable to pilot-scale preparation.