5-isobutyl-3,3-dimethylpyrrolidine-2,4-dione 、
4-溴-2-氯苯甲腈 、
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 oil (yield: 744 mg, 86%)的产率得到2-chloro-4-(5-isobutyl-3,3-dimethyl-2,4-dioxopyrrolidin-1-yl)benzonitrile