化学
蒂奥-
链式转移
木筏
三乙胺
季戊四醇
聚合
醋酸
二硫化碳
高分子化学
有机化学
产量(工程)
转让代理人
聚合物
自由基聚合
冶金
材料科学
阻燃剂
作者
Roshan T. A. Mayadunne,Graeme Moad,Ezio Rizzardo
标识
DOI:10.1016/s0040-4039(02)01497-1
摘要
Generic approaches to the synthesis of multi-thiocarbonyl thio compounds are described. A multi-hydroxy core was condensed with either α-bromophenyl acetic acid or 2-mercaptopropanoic acid in the presence of p-toluenesulfonic acid catalyst to afford the corresponding esters in quantitative yield. Treatment of the bromo esters with sodium methyl trithiocarbonate or the thiols with carbon disulfide, benzyl bromide and triethylamine then affords two series of trithiocarbonates. The process is exemplified by application to mono, di- or tri-pentaerythritol. These multi-thiocarbonyl thio compounds have application as chain-transfer agents in reversible addition fragmentation chain-transfer (RAFT) polymerization as precursors to star polymers.
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