Zhou Shixin, Chen Changle
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
Sci Bull (Beijing). 2018 Apr 15;63(7):441-445. doi: 10.1016/j.scib.2018.02.021. Epub 2018 Mar 10.
Metal catalyzed olefin hydrosilylation and metal mediated olefin polymerization are both of great academic and industrial importance. In this article, these two aspects are combined to prepare silicon-functionalized polyolefin materials. First, pyridine-diimine cobalt-catalyzed dehydrogenative silylations of various terminal olefins with alkylsilanes lead to the formation of a variety of allylsilanes at high yields. Then, the allylsilanes are copolymerized with ethylene using an α-diimine nickel catalyst, leading to the formation of branched polyolefins with high molecular weight and moderate comonomer incorporation. This subsequent catalytic process is an efficient strategy for the synthesis of silicon-functionalized polyolefins using widely available and inexpensive starting materials.
金属催化的烯烃硅氢化反应和金属介导的烯烃聚合反应在学术和工业上都具有重要意义。在本文中，将这两个方面结合起来制备硅官能化聚烯烃材料。首先，吡啶二亚胺钴催化各种末端烯烃与烷基硅烷的脱氢硅氢化反应，以高收率生成各种烯丙基硅烷。然后，使用α-二亚胺镍催化剂使烯丙基硅烷与乙烯共聚，生成具有高分子量和适度共聚单体掺入量的支化聚烯烃。这种后续的催化过程是一种使用广泛可得且廉价的起始原料合成硅官能化聚烯烃的有效策略。
