(S)-acetic acid 1-(5-{[2-(3,5-bis-trifluoromethyl-phenyl)-2-methyl-propionyl]-methyl-amino}-4-o-tolyl-pyridin-2-yl)-4-oxo-pyrrolidin-2-ylmethyl ester 在
二乙胺基三氟化硫 作用下,
以
二氯甲烷 为溶剂,
反应 36.0h,
以45%的产率得到(S)-acetic acid 1-(5-{[2-(3,5-bis-trifluoromethyl-phenyl)-2-methyl-propionyl]-methyl-amino}-4-o-tolyl-pyridin-2-yl)-4,4-difluoro-pyrrolidin-2-ylmethyl ester