反应详情

By an operation in the same manner as in Reference Example 3 and using cerium chloride (8.58 g), 3 mol/L ethylmagnesium bromide—diethyl ether solution (9.6 mL) and benzyl (2S)-2-ethyl-3-oxopyrrolidine-1-carboxylate (2.37 g), the title compound was obtained as colorless oil (yield: 2.19 g, yield: 82%).