Effective syntheses of per-2,3-di- and per-3-O-chloroacetyl-β-cyclodextrins: A new kind of ATRP initiators for star polymers

被引：16

作者：

Guo, Zhizhang ^{[1
]}

Chen, Xingyu ^{[1
]}

Zhang, Xiao ^{[1
]}

Xin, Jianyu ^{[1
]}

Li, Jianshu ^{[1
]}

Xiao, Huining ^{[2
]}

机构：

[1] Sichuan Univ, Coll Polymer Sci & Engn, Chengdu 610065, Peoples R China

[2] Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada

来源：

TETRAHEDRON LETTERS | 2010年 / 51卷 / 17期

基金：

中国国家自然科学基金; 加拿大自然科学与工程研究理事会;

关键词：

Chloroacetylated beta-cyclodextrin; Selective synthesis; ATRP initiator; Star polymer; TRANSFER RADICAL POLYMERIZATION; CATIONIC POLYMERS; CYCLODEXTRIN-CORE;

D O I：

10.1016/j.tetlet.2010.02.140

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Selective chloroacetylations at per-2,3- and per-3-positions of beta-cycloclextrin have been achieved via protection-deprotection methods. The reaction condition of pH >4 controlled by appropriate proton scavenger is essential for obtaining designed chloroacetylation degree under effective protection, as well as for high yield with less side-products. The B-cyclodextrin derivatives with 14 or 7 chloroacetyl groups are useful initiators for synthesizing star polymers with well-defined structure by atom transfer radical polymerization. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2351 / 2353

页数：3

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