反应详情

By an operation in the same manner as in Reference Example 3 and using cerium chloride (7.94 g), 3 mol/L ethylmagnesium bromide-diethyl ether solution (9.46 mL) and benzyl (2S)-2-methyl-3-oxopyrrolidine-1-carboxylate (3.0 g), the title compound was obtained as pale-yellow oil (yield: 1.96 g, yield: 58%).