Facile functionalization of isotactic polypropylene by azide and alkyne groups for click chemistry application
Facile functionalization of isotactic polypropylene by azide and alkyne groups for click chemistry application
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DOI：
10.1002/aoc.1819
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发表时间：
2011-08
影响因子：
3.9
通讯作者：
Chuanhui Zhang;H. Niu;Jin‐Yong Dong
中科院分区：
文献类型：
--
作者：
Chuanhui Zhang;H. Niu;Jin‐Yong Dong
本文介绍了两种简便的方法实现叠氮基和炔基对等规聚丙烯（i-PP）的功能化。一种方法包括用二烷基锌作为链转移剂进行异戊二烯催化的等规丙烯聚合以制备碘封端的i-PP，其可以转化为叠氮化物封端的i-PP。另一种是以羟基接枝聚丙烯为原料，与双（三氯甲基）碳酸酯和炔丙胺反应，生成接枝炔基。这两种方法都是有效、可控和安全的。叠氮化物封端的和炔接枝的i-PP容易应用于点击化学以构建新的i-PP结构，例如长链支化的i-PP。版权所有© 2011约翰威利父子有限公司.
This paper presents two facile methods to achieve functionalization of isotactic polypropylene (i-PP) by azide and alkyne groups. One method comprises metallocene-catalyzed isospecific propylene polymerization with dialkylzinc as chain transfer agent to produce iodo-terminated i-PP, which can be transformed to azide-terminated i-PP. The other utilizes hydroxyl-grafted i-PP as a raw material to react with bis(trichloromethyl)carbonate and propargyl amine, generating grafted alkyne groups. Both approaches are effective, controllable and safe. The azide-terminated and alkyne-grafted i-PP are readily applicable to click chemistry for construction of new i-PP architecture, e.g. long-chain branched i-PP. Copyright © 2011 John Wiley & Sons, Ltd.