R. Pellicciari et al., THE REACTION OF ALPHA-DIAZO-BETA-HYDROXY ESTERS WITH BORON-TRIFLUORIDE, Journal of the Chemical Society, Chemical Communications, (24), 1993, pp. 1798-1800
Exposure of a cyclic alpha-diazo-beta-hydroxy ester to different conce
ntrations of boron trifluoride in various solvents affords an interest
ing variety of products.