Coupling reactions of CO2 with neat epoxides catalyzed by PPN salts to yield cyclic carbonates.
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.
Sit
Wing Nga
WN
Department of Applied Biology & Chemical Technology, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
Ng
Siu Man
SM
Kwong
Kar Yan
KY
Lau
Chak Po
CP