(3S,6S)-3,6-diisobutylpiperazin-2-one 、
3,5-双三氟甲基苄基溴 、
(3S,6S)-4-(4-fluoro-2-(trifluoromethyl)benzyl)-3,6-diisobutylpiperazin-2-one 以furnished the desired product 223 (60 mg, 14.6% yield) as an oil的产率得到(3S,6S)-4-(3,5-bis-trifluoromethyl-benzyl)-3,6-diisobutyl-piperazin-2-one