3-bromo-1-ethyl-8-[2-(3-fluoro-4-trifluoromethyl-phenyl)-ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester 以
methanol-dichloromethane 为溶剂,
反应 5.5h,
以afforded 1-ethyl-8-[2-(3-fluoro-4-trifluoromethyl-phenyl)-ethyl]-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester as a yellow oil (0.472 g; 45%)的产率得到1-ethyl-8-[2-(3-fluoro-4-trifluoromethyl-phenyl)-ethyl]-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester