(2S,3S)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-methylpyrrolidin-5-one 、
2-氰基-5-碘三氟甲苯 、
Dicaesio carbonate 、
4,5-双二苯基膦-9,9-二甲基氧杂蒽 在
(1E,4E)-1,5-diphenylpenta-1,4-dien-3-one;palladium 作用下,
以in the same manner as in Reference Example 3, the title compound was obtained as a colorless solid (yield: 5.617 g, yield: 64.7%)的产率得到4-[(2S,3S)-3-(tert-butyldimethylsilyloxy)-2-methyl-5-oxopyrrolidin-1-yl]-2-(trifluoromethyl)benzonitrile