Stereoselectivity in metallocene-catalyzed coordination polymerization of renewable methylene butyrolactones: From stereo-random to stereo-perfect polymers

Abstract
Coordination polymerization of renewable α-methylene-γ-(methyl) butyrolactones by chiral C 2-symmetric zirconocene catalysts produces stereo-random, highly stereo-regular, or perfectly stereo-regular polymers, depending on the monomer and catalyst structures. Computational studies yield a fundamental understanding of the stereocontrol mechanism governing these new polymerization reactions mediated by chiral metallocenium catalysts. © 2012 American Chemical Society.

Citation
Chen, X., Caporaso, L., Cavallo, L., & Chen, E. Y.-X. (2012). Stereoselectivity in Metallocene-Catalyzed Coordination Polymerization of Renewable Methylene Butyrolactones: From Stereo-random to Stereo-perfect Polymers. Journal of the American Chemical Society, 134(17), 7278–7281. doi:10.1021/ja301811s

Acknowledgements
We thank the U.S. National Science Foundation (NSF-1012326 to E.Y.-X.C.) and the National Science Foundation of China (no. 21072120 to X.C.) for financial support. L. Cavallo thanks the HPC team of Enea (www.enea.it) for use of the ENEA-GRID and HPC facilities CRESCO (www.cresco.enea.it) in Portici, Italy. We also thank Wesley Mariott and Garret Miyake for some initial experiments on the MBL polymerization by catalyst 1.

Publisher
American Chemical Society (ACS)

Journal
Journal of the American Chemical Society

DOI
10.1021/ja301811s

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