A method for producing a polydiene, the method comprising the steps of (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.
US9650456B2
申请人:——
公开号:US9650456B2
公开(公告)日:2017-05-16
[EN] PROCESS FOR PRODUCING POLYDIENES<br/>[FR] PROCÉDÉ DE FABRICATION DE POLYDIÈNES
申请人:BRIDGESTSONE CORP
公开号:WO2013138270A1
公开(公告)日:2013-09-19
A method for producing a polydiene, the method comprising the steps of (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.
Palladium-catalyzed thiolation of alkanes and ethers with arylsulfonyl hydrazides
A new method for the preparation of alkyl aryl sulfides through direct oxidative thiolation of alkanes or ethers with arylsulfonylhydrazides using di-tert-butyl peroxide (DTBP) as an oxidant catalyzed by Pd(OAc)2 has been reported. The C-H bonds in various alkanes or ethers were successfully converted into C-S bonds to yield the corresponding sulfides in moderate to good yields.