Abstract New 4‐Aryl‐6‐methyl‐8‐phenyl‐2,3‐dihydropyrazolo[3,4‐ b ]diazepines and 4‐aryl‐8‐methyl‐6‐phenyl‐2,3‐dihydropyrazolo[4,3‐ b ]diazepines were obtained from the reaction of 4,5‐diamino‐3‐methyl‐1‐phenylpyrazole 1 with one equivalent of the 3‐dimethylaminopropiophenones 2 in absolute ethanol. The structures of 4‐aryl‐6‐methyl‐8‐phenyl‐2,3‐dihydropyrazolo[3,4‐ b ]diazepines 3 and 4‐aryl‐8‐methyl‐6‐phenyl‐2,3‐dihydropyrazolo[4,3‐ b ]diazepines 4 were determined by detailed nmr measurements.