T. Yano et al., MAGNESIUM OXIDE-CATALYZED REACTION OF CARBON-DIOXIDE WITH AN EPOXIDE WITH RETENTION OF STEREOCHEMISTRY, Chemical communications, (12), 1997, pp. 1129-1130
Magnesium oxide is an efficient catalyst for the cycloaddition of carb
on dioxide to epoxides under mild conditions; the reaction of carbon d
ioxide with (R)-styrene oxide in the presence of magnesium oxide gives
(R)-phenyl carbonate in 97% ee with retention of stereochemistry.