1-(4-methoxyphenyl)-4-phenethylpiperazine 、
1-(4-chlorobenzylsulfonyl)-4-(2,5-difluoro-4-methoxyphenyl)piperazine 以to provide crude 1-(4-chlorobenzylsulfonyl)-4-(2,5-difluoro-4-hydroxyphenyl)piperazine (380 mg)的产率得到1-(4-chlorobenzylsulfonyl)-4-(2,5-difluoro-4-hydroxyphenyl)piperazine