Mechanism of asymmetric polymerization of triphenylmethyl methacrylate. Separation and optical resolution of oligomers.
Mechanism of asymmetric polymerization of triphenylmethyl methacrylate. Separation and optical resolution of oligomers.
复制标题
甲基丙烯酸三苯甲酯的不对称聚合机理。
DOI：
10.1246/cl.1987.759
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发表时间：
1987
影响因子：
1.6
通讯作者：
K. Hatada
中科院分区：
文献类型：
--
作者：
Y. Okamoto;E. Yashima;T. Nakano;K. Hatada
在甲苯溶液中，用(−)-雀花碱-荧基锂络合物在−78℃下进行了甲基丙烯酸三苯甲酯的不对称齐聚反应，得到的低聚物(DP=2和3)分别在硅胶柱和手性高效液相色谱柱上分离为非对映异构体和旋光异构体。在此基础上，对TRMA的不对称聚合机理进行了探讨。
Asymmetric oligomerization of triphenylmethyl methacrylate (TrMA) was carried out with (−)-sparteine-fluorenyllithium complex in toluene at −78 °C and the oligomers of methyl methacrylate (DP=2 and 3) derived therefrom were separated into diastereomers and optical isomers on silica gel and chiral HPLC columns, respectively. On the basis of the obtained data, the mechanism of asymmetric polymerization of TrMA was discussed.