Highly regioselective synthesis of novel 1,4'-bipyrazoles
Novel 1,4'-bipyrazoles were synthesized via highly regioselective cyclocondensation reactions of β-dimethylaminoenones with hydrazine monohydrate, tert-butylhydrazine hydrochloride, phenylhydrazine hydrochloride or carboxymethylhydrazine. X-ray diffractio