A novel process for producing 5-[(substituted)amino]-8-[phenyl or substituted-phenyl]-3H,6H-1,4,5a,8a-tetraazaace-naphthylen-3-ones of the formula:
Where R₁, R₂ and R₃ are defined in the specification by reacting a 4,5-dihydro-7-[phenyl or substituted phenyl]pyrazolo[1,5-a]pyrimidine-3-carboxamide with carbon disulfide and a suitable base and a lower alkyl iodide to give a 5-(lower alkylthio)-8-[phenyl or substituted phenyl]-3H,6H-1,4,5a,8a-tetraazaacenaphthylen-3-one which is further reacted with an amine of the formula:
to give the desired compounds.
一种生产 5-[(取代)
氨基]-8-[苯基或取代苯基]-3H,6H-1,4,5a,8a-四氮杂
萘-3-酮的新工艺:
其中R₁、R₂和R₃在说明书中定义,通过将4,5-二氢-7-[苯基或取代苯基]
吡唑并[1、5-a]
嘧啶-3-甲酰胺与
二硫化碳、适当的碱和低级烷基
碘化物反应,得到 5-(低级烷
硫基)-8-[苯基或取代苯基]-3H,6H-1,4,5a,8a-四氮杂
萘-3-酮,再与式中的胺反应:
得到所需的化合物。