Ring-opening Polymerization of L-Lactide by an Anionic Cobalt（Ⅱ） Aryloxide  

作　　者：袁春香 徐小平 张勇 纪顺俊 

机构地区：[1]Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou,Jiangsu 215123,China

出　　处：《Chinese Journal of Chemistry》2012年第7期1474-1478,共5页中国化学（英文版）

基　　金：Acknowledgement This work was partially supported by the NatxonaL Natural Science Foundation of China （Nos. 21042007, 21172162）, the Nature Science Basic Research of Jiangsu Province for Higher Education （No. 10KJB 150016）, the Priority Academic Program Development of Jiangsu Higher Education Institutions and Key Project in Science and Technology Innovation Cultivation Program of Soochow University.

摘　　要：The reaction of anhydrous CoCl2 with NaOAr （ArO=2,4,6-tri-tert-butylphenoxo） in THF at room temperature in 1 ： 3 molar ratio afforded anionic cobalt aryloxide [Na（THF）6][Co（OAr）3] （1）. The definite structure of this com- plex was characterized by X-ray single crystal diffraction. It was found that this anionic aryloxo cobalt（Ⅱ） complex could effectively initiate the ring-opening polymerization of L-lactide both in solution and in bulk, leading to high molecular weight poly（L-lactide）.The reaction of anhydrous CoCl2 with NaOAr （ArO=2,4,6-tri-tert-butylphenoxo） in THF at room temperature in 1 ： 3 molar ratio afforded anionic cobalt aryloxide [Na（THF）6][Co（OAr）3] （1）. The definite structure of this com- plex was characterized by X-ray single crystal diffraction. It was found that this anionic aryloxo cobalt（Ⅱ） complex could effectively initiate the ring-opening polymerization of L-lactide both in solution and in bulk, leading to high molecular weight poly（L-lactide）.

关 键 词：ring-opening polymerization cobalt（Ⅱ） aryloxide SYNTHESIS L-LACTIDE 

分 类 号：TQ253[化学工程—有机化工] O633.14[理学—高分子化学]