Suppression of Chain Transfer in Catalytic Acrylate Polymerization via Rapid and Selective Secondary Insertion
Suppression of Chain Transfer in Catalytic Acrylate Polymerization via Rapid and Selective Secondary Insertion
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DOI：
10.1021/jacs.5b00179
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发表时间：
2015-03-04
影响因子：
15
通讯作者：
Mecking, Stefan
中科院分区：
文献类型：
--
作者：
Jian, Zhongbao;Baier, Moritz C.;Mecking, Stefan
在催化共聚合中，引入极性乙烯基单体后不期望的链转移是一个基本问题。我们提出了一种方法来克服这个问题的快速连续插入。丙烯酸酐的第二个双键迅速插入分子内，区域和立体选择性地形成有利于链增长的环状重复单元和伯烷基（>96%）。这导致与单官能丙烯酸酯单体相比显著提高的共聚物分子量。
In catalytic copolymerization, undesired chain transfer after incorporation of a polar vinyl monomer is a fundamental problem. We show an approach to overcome this problem by a fast consecutive insertion. The second double bond of acrylic anhydride rapidly inserts intramolecularly to regio- and stereoselectively form a cyclic repeat unit and a primary alkyl favorable for chain growth (>96%). This results in significantly enhanced copolymer molecular weights vs monofunctional acrylate monomers.