溴甲烷 、
5-(4-cyanophenyl)-2,7-dimethyl-3-oxo-8-(3-trifluoromethyl phenyl)-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidine-6-carboxylic acid 2-dimethylaminoethyl ester 以
乙腈 为溶剂,
以100%的产率得到{2-[5-(4-cyanophenyl)-2,7-dimethyl-3-oxo-8-(3-trifluoromethylphenyl)-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidine-6-carbonyloxy]ethyl}trimethylammonium bromide