(E)-1-(2,3-dichlorophenyl)-N-methylmethanimine 、
(Z)-2-(4-chloro-2-fluoro-phenyl)-5,5-dimethyl-hex-2-enenitrile 、
氢氧化钾 以
二甲基亚砜 为溶剂,
以to give rac-(2S,3S,4S)-3-(4-chloro-2-fluoro-phenyl)-2-(2,3-dichloro-phenyl)-4-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile (1.85 g 21.0%)的产率得到rac-(2S,3S,4S)-2-(2,3-dichloro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-4-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile