3-methanesulfonyl-1-trifluoromethyl-8-[2-(4-trifluoromethyl-phenyl)-ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester 、
sodium ethanolate 在
氮 、
二氯甲烷 、
水 、
magnesium sulfate 、
methanol-dichloromethane 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以afforded 3-ethoxy-1-trifluoromethyl-8-[2-(4-trifluoromethyl-phenyl)-ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester as a pale yellow solid which的产率得到3-ethoxy-1-trifluoromethyl-8-[2-(4-trifluoromethyl-phenyl)-ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester