申请人:The Upjohn Company
公开号:US03994940A1
公开(公告)日:1976-11-30
A process for the production of known compounds of the formula IV ##SPC1## wherein R.sub.1 is hydrogen or alkyl of 1 to 3 carbon atoms, inclusive; wherein R.sub.2 is hydrogen, chloro, or fluoro; wherein R.sub.3 is hydrogen, or fluoro with the proviso that R.sub.3 is not fluoro if R.sub.2 is chloro; wherein R.sub.4 is hydrogen, chloro, fluoro, bromo, nitro, and trifluoromethyl, which comprises: treating a compound of the formula I: ##SPC2## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 have the same significance as above, in formic acid solution with aqueous formaldehyde; treating the resulting compound with phthalimide, triphenylphosphine and then diethyl azodicarboxylate to give a compound which when heated with hydrazine, gives compound IV above. The compounds of formula IV above are known useful antidepressant, tranquilizing, sedative and anti-convulsant agents. The intermediates have also activity in the sedative-tranquilizing area and these compounds can be used in mammals and birds for tranquilization.
一种生产已知化合物的方法,其化学式为IV,其中R.sub.1为氢或1至3个碳原子的烷基;R.sub.2为氢、氯或氟;R.sub.3为氢或氟,但要注意如果R.sub.2为氯,则R.sub.3不是氟;R.sub.4为氢、氯、氟、溴、硝基和三氟甲基。该方法包括:将化合物I进行处理:在甲酸溶液中与水甲醛反应;将得到的化合物与邻苯二甲酰亚胺、三苯基膦和乙二酰双肉桂酰胺反应,得到一种化合物,当与肼加热时,得到上述化合物IV。化合物IV是已知的有用的抗抑郁、镇静、镇痉和抗惊厥药物。中间体在镇静-镇静领域也具有活性,这些化合物可用于哺乳动物和鸟类的镇静作用。