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.
Two-component initiator system (amine-free) with very good storage stability and particular suitability for acid systems
申请人:Utterodt Andreas
公开号:US20070040151A1
公开(公告)日:2007-02-22
A two-component initiator system having accelerators for curing polymerizable materials comprising the following components: (a) a hydroperoxide compound containing one or more hydroperoxide groups that are bound to a tertiary carbon; (b) a thiourea derivative; and (c) as accelerator, a copper compound which is soluble in the preparation is preferably free of amine and is particularly suited for polymerizable dental compositions.