3-苯基-丙烷-1,2,2-三羧酸 、
10-chloro-10,11-dihydro-2,8-dimethyl-dibenz[b,f]oxepin 以there is obtained 3-[2-{4-[10,11-dihydro-2,8-dimethyl-dibenz[b,f]oxepin-10-yl]-1-piperazinyl}-ethyl]-2-oxazolidinone having a melting point of 175°-176° C.的产率得到3-<2-<4-(10,11-Dihydro-2,8-dimethyl-dibenz
oxepin-10-yl)-1-piperazinyl>ethyl>oxazolidinon