Racemic 4-(trans-2,4,5-trimethyl-piperazin-1-yl)-phenylamine   、                                                                                      
cis-4-(2-fluoro-4-nitrophenyl)-1,2,6-trimethylpiperazine                                                                                                                                                              在
                                                                                                                                         
钯                                                                                                                                                                                                                               氢气                                                                                                                                  作用下,
                                                                                                                                                                                                                            以provided crude 3-fluoro-4-(cis-3,4,5-trimethyl-piperazin-1-yl)-phenylamine (1.04 g, 84% recovery, 96% purity as determined by LC/MS analysis @ UV 254 nm detection,)的产率得到3-fluoro-4-(cis-3,4,5-trimethyl-piperazin-1-yl)-phenylamine