Copolymerization of CO₂ and epoxides mediated by zinc organyls.

ABSTRACT: Herein we report the copolymerization of CHO with CO₂ in the presence of various zinc compounds R₂Zn (R = Et, Bu, iPr, Cy and Ph). Several zinc organyls proved to be efficient catalysts for this reaction in the absence of water and co-catalyst. Notably, readily available Bu₂Zn reached a TON up to 269 and an initial TOF up to 91 h^-1. The effect of various parameters on the reaction outcome has been investigated. Poly(ether)carbonates with molecular weights up to 79.3 kg mol^-1 and a CO₂ content of up to 97% were obtained. Under standard reaction conditions (100 °C, 2.0 MPa, 16 h) the influence of commonly employed co-catalysts such as PPNCl and TBAB has been investigated in the presence of Et₂Zn (0.5 mol%). T

SUBMITTER: Wulf C 

PROVIDER: S-EPMC9077689 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature