[1-{[(1,1-dimethylethyl)oxy]carbonyl}-4-(3,4-difluorophenyl)-4-piperidinyl]acetic acid 、 [1-(3,5-dibromo-phenyl)-ethyl]-methylamine (enantiomer 1) 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 0.5h,
生成
1-Piperidinecarboxylic acid,4-[2-[[(1S)-1-(3,5-dibromophenyl)ethyl]methylamino]-2-oxoethyl]-4-(3,4-difluorophenyl)-, 1,1-dimethylethyl ester