Regioselective living polymerization of allylcyclohexane and precise synthesis of hydrocarbon block copolymers with cyclic units†,Polymer Chemistry

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Regioselective living polymerization of allylcyclohexane and precise synthesis of hydrocarbon block copolymers with cyclic units†
Polymer Chemistry ( IF 4.1 ) Pub Date : 2018-02-07 00:00:00 , DOI: 10.1039/c8py00047f
Jie Gao _{1,

2,

3,

4,

5} , Zonghang Ying _{1,

2,

3,

4,

5} , Liu Zhong _{1,

2,

3,

4,

5} , Heng Liao _{1,

2,

3,

4,

5} , Haiyang Gao _{1,

2,

3,

4,

5} , Wu Qing _{1,

2,

3,

4,

5}

Affiliation

Precise control over macromolecular structures is a central goal and remains a great challenge in synthetic polymer chemistry. We report herein the living isomerization polymerization of allycyclohexane (ACH) using α-diimine nickel catalysts with high regioselectivity. The influences of catalyst structure, cocatalyst, and temperature on ACH polymerization were studied in detail. The macromolecular structure of polyallycyclohexanes (PACHs) was precisely controlled by living polymerization in combination with high regioselectivity under optimized conditions. A mechanistic model involving the 2,1-insertion selectivity of ACH and chain walking was proposed. Well-defined polyallycyclohexane-b-poly(1-hexene) copolymers (PACH-b-PH) with cyclic units were synthesized by sequential monomer addition.

中文翻译：

烯丙基环己烷的区域选择性活性聚合和具有环状单元的烃嵌段共聚物的精确合成†

精确控制大分子结构是一个主要目标，并且在合成聚合物化学中仍然是一个巨大的挑战。我们在此报告了使用具有高区域选择性的α-二亚胺镍催化剂进行的烯丙基环己烷（ACH）的活性异构化聚合反应。详细研究了催化剂结构，助催化剂和温度对ACH聚合的影响。聚烯丙基环己烷（PACHs）的大分子结构是通过在最佳条件下通过活性聚合与高区域选择性相结合来精确控制的。提出了一种涉及ACH的2，1-插入选择性和链行走的机理模型。良好定义polyallycyclohexane- b -聚（1-己烯）共聚物（PACH- b通过连续的单体加成合成具有环单元的-PH）。

更新日期：2018-02-07

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