Substituted 5-hydrazinopyridazin-3(2H)-ones, e.g., 4-chloro-2-(3-trifluoromethylphenyl)-5-(1-methylhydrazino)-pyridazin-3(2H) -one or 4-chloro-2-(2-fluoro-5-trifluoromethylphenyl)-5-(1-methylhydrazino)-pyrida zin-3(2H)-one, are prepared by treating halogenated pyridazin-3-(2H)-ones with hydrazine and substituted hydrazines and are useful as central nervous system depressants and sleep inducers.
替代的5-
肼基
吡啶并嗪-3(2H)-酮,例如4-
氯-2-(3-三
氟甲基苯基)-5-(1-甲基
肼基)-
吡啶并嗪-3(2H)-酮或4-
氯-2-(2-
氟-5-三
氟甲基苯基)-5-(1-甲基
肼基)-
吡啶并嗪-3(2H)-酮,是通过用
肼和替代
肼处理卤代
吡啶并嗪-3-(2H)-酮而制备的,可用作中枢神经系统
抑制剂和催眠剂。