ethyl (dimethylsulfuranylidene)acetate 、
(+)-(S)-α-(diethoxyphosphoryl)vinyl p-tolyl sulfoxide 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
甲苯 为溶剂,
生成
(1S,2S)-2-(Diethoxy-phosphoryl)-2-((S)-toluene-4-sulfinyl)-cyclopropanecarboxylic acid ethyl ester 、 (1R,2S)-2-(Diethoxy-phosphoryl)-2-((S)-toluene-4-sulfinyl)-cyclopropanecarboxylic acid ethyl ester 、 (1S,2R)-2-(Diethoxy-phosphoryl)-2-((S)-toluene-4-sulfinyl)-cyclopropanecarboxylic acid ethyl ester 、 diethyl 1-p-tolylsulfinyl-2-carboethoxycyclopropane phosphonate