Controlled Insertion Reaction of Thiirane into Carbamothioate: Novel Synthesis of Well-Defined Polysulfide
Controlled Insertion Reaction of Thiirane into Carbamothioate: Novel Synthesis of Well-Defined Polysulfide
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DOI：
10.1021/ma101969r
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发表时间：
2010-12-14
期刊：
影响因子：
5.5
通讯作者：
Nishikubo, Tadatomi
中科院分区：
文献类型：
--
作者：
Kudo, Hiroto;Sato, Kenichiro;Nishikubo, Tadatomi
研究了在四丁基氯化铵（TBAC）存在下，1-甲基-2-吡咯烷酮为溶剂，60 ℃下硫代氨基甲酸对甲苯酯（PTCT）与硫化丙烯（PS）的插入反应，PTCT与PS的投料比为1/1-1/40。结果表明，聚合物的相对分子质量（M-n）与PS投料比一致，分子分散度（M-w/M-n）很窄（M-w/M-n < 1.10）。也就是说，这种插入反应可以在生命系统下进行。此外，PS与硫代三氨基甲酸酯的插入活性反应进行了研究，得到了控制的三臂星形多硫化物。
The insertion reaction of propylene sulfide (PS) into p-tolylcarbamothioate (PTCT) was examined in the presence of tetrabutylammonium chloride (TBAC) in 1-methyl-2-pyrrolidinone at 60 degrees C in the feed ratio of PTCT/PS = 1/1-1/40, affording the corresponding polysulfides in satisfactory yields. It was found that the molecular weights (M-n's) coincided with the feed ratios PS and molecular dispersity ratios (M-w/M-n) were very narrow (M-w/M-n < 1.10). i.e., this insertion reaction could be performed under the living system. Furthermore, the insertion living reaction of PS using tricarbamothioate was examined to give the controlled three-arms star-shaped polysulfides.