Wei-Min Ren

TL;DR: This Account outlines efforts to develop highly active Co(III)-based catalysts for the selective production of polycarbonates from the alternating copolymerization of CO(2) with epoxides and provides a thorough mechanistic understanding of the high activities, excellent selectivities, and unprecedented stereochemical control of these Co(II) based catalysts in the production of CO (2) copolymers.

TL;DR: The synthesis of highly isotactic poly(cyclo hexene carbonate)s from meso-cyclohexene oxide using dissymmetrical enantiopure salenCo(III) complexes in conjunction with bis(triphenylphosphine)iminium chloride (PPNCl) as catalyst is reported.

TL;DR: Chiral chromium complexes of tetradentate N,N'-disubstituted bis(aminophenoxide) (designated as Salan, a saturated version of Schiff-base Salen ligand) in conjunction with an ionic quaternary ammonium salt can efficiently catalyze the copolymerization of CO 2 with racemic propylene oxide (rac-PO) at mild conditions to selectively afford completely alternating poly(propylene carbonate) (PPC) with ∼ 95% head-to-tail linkages and moderate enantioselectivity RE

TL;DR: In this paper, a detailed study of the difference in reactivity of the copolymerization reactions of styrene oxidevs. propylene oxide with carbon dioxide utilizing binary (salen)cobalt(III) catalyst systems to provide perfectly alternating copolymers is reported.

TL;DR: In this article, the role of the nucleophilic co-catalyst in the asymmetric coupling of racemic epoxides with CO2 using multichiral Co(III) complexes was investigated.