11-(3-chloro-1-oxopropyl)-5,11-dihydro-6H-pyrido<2,3-b><1,4>benzodiazepin-6-one   、                                                                                      
1-烯丙基哌嗪                                                                                                                                                                                                                                                                                                          以to obtain a 39% yield of 11-[3-(4-allyl-1-piperazinyl)-propionyl]-5,11-dihydro-6H-pyrido-[2,3-b][1,4]-benzodiazepine-6-one melting at 205°-207° C.的产率得到11-[3-(4-allyl-1-piperazinyl)-propionyl]-5,11-dihydro-6H-pyrido-[2,3-b][1,4]-benzodiazepine-6-one