Patent ID: 7371578
Filing Date: 2008-05-13
Classification: B01J,C07D,G01N

Abstract:
1. A method of evaluating the catalytic activity of a rare earth alkoxide, comprising the steps of: preparing a rare earth alkoxide solution by dissolving a rare earth alkoxide represented by Ln(OR) heat treating the rare earth alkoxide solution for 1 to 3 hours at 35° C. to 60° C., adding the heat treated rare earth alkoxide solution to optically active 2,2′ -dihydroxy-1,1′-binaphthol (BINOL) represented by formulae 1 or 2: to prepare a rare earth complex catalyst, and using the rare earth complex catalyst to conduct the asymmetric epoxidation, of an enone represented by formula 3: wherein R whereby the amount of an epoxy enone formed in the asymmetric epoxidation, the amount of the unreacted enone, and enantiomeric excess of the epoxy enone may be measured.