(S)-tert-butyl 3-(4-bromophenyl)-4,4,4-trifluoro-2-methylenebutanoate 、
benzohydroximoyl chloride 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 7.17h,
生成
tert-butyl 5-(1-(4-bromophenyl)-2,2,2-trifluoroethyl)-4,5-dihydro-3-phenylisoxazole-5-carboxylate 、 tert-butyl 5-(1-(4-bromophenyl)-2,2,2-trifluoroethyl)-4,5-dihydro-3-phenylisoxazole-5-carboxylate 、 tert-butyl 5-(1-(4-bromophenyl)-2,2,2-trifluoroethyl)-4,5-dihydro-3-phenylisoxazole-5-carboxylate