Synthesis of cyclic monothiocarbonates via the coupling reaction of carbonyl sulfide (COS) with epoxides
作者:M. Luo、X.-H. Zhang、D. J. Darensbourg
DOI:10.1039/c5cy00977d
日期:——
for the synthesis of cyclic monothiocarbonates via the coupling reaction of carbonyl sulfide (COS) and epoxides. The systems proved to be efficient single-component, metal-free catalysts for the reaction of simple (propylene oxide, 1,3-butene oxide) or activated epoxides (epichlorohydrin, glycidyl phenyl ether) with COS under solvent-free and mild reaction conditions to selectively afford the corresponding
[EN] METHOD FOR THE PREPARATION OF THIOCARBONATES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE THIOCARBONATES
申请人:BASF SE
公开号:WO2019034469A1
公开(公告)日:2019-02-21
Process for the preparation of a compound with at least one five-membered cyclic monothiocar- bonate group wherein a) a compound with at least one epoxy group is used as starting material b) the compound is reacted with phosgene or an alkyl chloroformate thus giving an adduct and c) the adduct is reacted with a compound comprising anionic sulfurthus obtaining the com- pound with at least one five-membered cyclic monothiocarbonate group.
[EN] PROCESS FOR THE MANUFACTURING OF A POLYMER WITH URETHANE GROUPS<br/>[FR] PROCÉDÉ DE PRODUCTION D'UN POLYMÈRE PRÉSENTANT DES GROUPES URÉTHANE
申请人:BASF SE
公开号:WO2019034470A1
公开(公告)日:2019-02-21
Object of the invention is a process for the manufacturing of a polymer with urethane groups, wherein in a first alternative A)a five-membered cyclic monothiocarbonate B)a compound with at least two amino groups, selected from primary or secondary amino groups, and C)a compound which at least two functional groups that react with a group -SH or, in case of a carbon-carbon triple bond as functional group that react with a group -SH, a compound with at least one carbon-carbon triple bond are reacted or wherein in a second alternative A)a five-membered cyclic monothiocarbonate and D)a compound with at least one primary or secondary amino group and at least one functional group that reacts with a group -SH.