P-Chiral Phosphine鈥揝ulfonate/Palladium-Catalyzed Asymmetric Copolymerization of Vinyl Acetate with Carbon Monoxide

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• 作者：Akifumi Nakamura ; Takeharu Kageyama ; Hiroki Goto ; Brad P. Carrow ; Shingo Ito ; Kyoko Nozaki
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：August 1, 2012
• 年：2012
• 卷：134
• 期：30
• 页码：12366-12369
• 全文大小：294K
• 年卷期：v.134,no.30(August 1, 2012)
• ISSN：1520-5126

文摘

Utilization of palladium catalysts bearing a P-chiral phosphine鈥搒ulfonate ligand enabled asymmetric copolymerization of vinyl acetate with carbon monoxide. The obtained 纬-polyketones have head-to-tail and isotactic polymer structures. The origin of the regio- and stereoregularities was elucidated by stoichiometric reactions of acylpalladium complexes with vinyl acetate. The present report for the first time demonstrates successful asymmetric coordination鈥搃nsertion (co)polymerization of vinyl acetate.