5-Acetyl-7a-pyrrolidin-1-yl-3a,4,5,6,7,7a-hexahydro-isoxazolo[4,5-c]pyridine-3-carboxylic acid ethyl ester 、
三氟乙酸 、
水 在
magnesium sulfate 、 SiO2 、 乙醇乙酸乙酯 、
5-acetyl-4,5,6,7-tetrahydro-isoxazolo[4,5-c]pyridine-3-carboxylic acid-ethyl ester 作用下,
以
二氯甲烷 为溶剂,
反应 8.0h,
以12.5 g (90% of theoretical) of the desired product 5-acetyl-4,5,6,7-tetrahydro-isoxazolo[4,5-c]pyridine-3-carboxylic acid ethyl ester (C) were obtained in the form of a brown-yellow oil的产率得到5-acetyl-4,5,6,7-tetrahydro-isoxazolo[4,5-c]pyridine-3-carboxylic acid-ethyl ester