Recherches en série azabenzodiazépine VII. Synthése de pyrazolo[3,4-b]diazépines-1,4

Condensation of ethyl acetoacetate or acetylacetone with 4,5-diaminopyrazoles are reported and discussed. They gave new pyrazolo3,4-b]-1,4-diazepines or intermediates which can be cyclised.