Coupling reactions of CO2 with neat epoxides catalyzed by PPN salts to yield cyclic carbonates

Wing Nga Sit; Siu Man Ng; Kar Yan Kwong; Chak Po Lau

doi:10.1021/jo051077e

Coupling reactions of CO2 with neat epoxides catalyzed by PPN salts to yield cyclic carbonates

J Org Chem. 2005 Oct 14;70(21):8583-6. doi: 10.1021/jo051077e.

Authors

Wing Nga Sit¹, Siu Man Ng, Kar Yan Kwong, Chak Po Lau

Affiliation

¹ Department of Applied Biology & Chemical Technology, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.

PMID: 16209614
DOI: 10.1021/jo051077e

Abstract

The off-the-shelf reagent PPN+Cl- and PPN-manganese carbonylates [PPN]+[Mn(CO)4L]- (L = CO, PPh3) are good catalysts for the coupling reactions of CO2 with neat epoxides without the use of organic solvents to afford cyclic carbonates. PPN salts with weak nucleophilic anions such as PPN+BF4- and PPN+OTf- are, however, inactive for the coupling reactions.