title: P-chiral phosphine-sulfonate/palladium-catalyzed asymmetric copolymerization of vinyl acetate with carbon monoxide.
abstract: Utilization of palladium catalysts bearing a P-chiral phosphine-sulfonate ligand enabled asymmetric copolymerization of vinyl acetate with carbon monoxide. The obtained γ-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-insertion (co)polymerization of vinyl acetate.
authors: Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
authors: Akifumi
authors: A
authors: Nakamura
authors: Takeharu
authors: T
authors: Kageyama
authors: Hiroki
authors: H
authors: Goto
authors: Brad P
authors: BP
authors: Carrow
authors: Shingo
authors: S
authors: Ito
authors: Kyoko
authors: K
authors: Nozaki
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry*; D002384:Catalysis; D008024:Ligands; D010165:Palladium / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry; D058105:Polymerization; D013237:Stereoisomerism; D013451:Sulfonic Acids / Q000737:chemistry; D014753:Vinyl Compounds / Q000737:chemistry*
chemical_list: D008024:Ligands; D010720:Phosphines; D013451:Sulfonic Acids; D014753:Vinyl Compounds; D010165:Palladium; D002248:Carbon Monoxide; C044646:phosphine; C011566:vinyl acetate