A squaramide and tertiary amine: an excellent hydrogen-bonding pair organocatalyst for living polymerization
Literature Information
Publication Date
2015-04-09
DOI
10.1039/C5PY00508F
Impact Factor
5.582
Authors
Jingjing Liu, Cheng Chen, Zhenjiang Li, Wenzhuo Wu, Xu Zhi, Qiguo Zhang, Hao Wu, Xin Wang, Saide Cui, Kai Guo
View Original
Abstract
A hydrogen-bond motif based on a squaramide and sparteine efficiently promoted the ring-opening polymerization of L-lactide at ambient temperature. Narrowly dispersed polymers with precise molar masses (Đ = 1.05, Mn = 16 240 g mol−1) were obtained in a short reaction time (98% conv., 11 h) and with retention of stereochemistry. Experimental data and computational results indicated that the squaramide and sparteine pair is a competent H-bond donor–acceptor catalyst in living polymerization.
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Source Journal
Polymer Chemistry
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