Thioformic acid S-{(2R,3S)-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-1-[2-oxo-2-phenyl-1-(triphenyl-λ
5-phosphanylidene)-ethyl]-azetidin-2-yl} ester 以
甲苯 为溶剂,
反应 3.0h,
生成 (5S,6S)-2-Benzoyl-6-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-thia-1-aza-bicyclo[3.2.0]hept-2-en-7-one 、
(5R,6S)-2-Benzoyl-6-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-thia-1-aza-bicyclo[3.2.0]hept-2-en-7-one