📜Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于水,Barium Carbonate体系中,化学反应生成 3,4-环氧四氢噻吩-1,1-二氧化物 参考文献:Van Lohuizen; Backer,Recueil Des Travaux Chimiques Des Pays-Bas,1949,Vol. 68,P. 1137,1139 标题:Van Lohuizen; Backer,Recueil Des Travaux Chimiques Des Pays-Bas,1949,Vol. 68,P. 1137,1139
专利号:US-7038062-B2 优先权日:2004-07-01 标题:Synthesis of cyclic trithiocarbonates from epoxides 发明人:PARKER DANE KENTON 权利人:GOODYEAR TIRE & RUBBER 摘要:This invention provides a low cost technique for synthesizing cyclic trithiocarbonates by a simple one step process from epoxides that can be conducted under atmospheric pressure. This synthesis can be depicted as follows: n nwherein R represents a moiety selected from the group consisting of alkyl groups and aryl groups, wherein R′ represents a moiety selected from the group consisting of alkyl groups, aryl groups, and hydrogen atoms, and wherein R″ represents a moiety selected from the group consisting of alkyl groups, aryl groups, and hydrogen atoms, wherein the R moiety and the R′ moiety can be bonded together to form a cyclic structure, with the proviso that R″ represents a hydrogen atom if R′ represents an alkyl group or an aryl group. In this process carbon disulfide and a thiocyanate salt, such as potassium thiocyanate, are reacted with the epoxide in an ionic liquid, such as 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim] PF 6 ) in the presence of water to produce the cyclic trithiocarbonate.
专利号:US-2006004210-A1 优先权日:2004-07-01 标题:Synthesis of cyclic trithiocarbonates from epoxides