1-[1-(4-Bromo-phenyl)-ethyl]-2-methyl-piperazine 、
1-叔丁氧羰基-2-甲基-哌啶酮 以to afford 1-tert-butoxycarbonyl-2-methyl-4-{4-[1 (S)-(4-Bromophenyl)-ethyl]-3(R)-methylpiperazin-1-yl}-piperidine的产率得到1-tert-butoxycarbonyl-2-methyl-4-{4-[1 (S)-(4-Bromophenyl)-ethyl]-3(R)-methylpiperazin-1-yl}-piperidine