Piperonylamine → 8-Methoxy-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Participants

Reaction Steps

A suspension of 4-piperidone monohydrate hydrochloride (1.0 g, 6.5 mmol) and 4-methoxyphenylhydrazine hydrochloride (1.14 g, 6.5 mmol) in ethanol (17 ml) is kept stirring at reflux overnight. The resulting solid is filtered off and washed with diethyl ether to afford crude sub-title compound, which is used without further purification: tR (LC-1) 0.38; ESI-MS (positive ion): m/z 203.19 [M+H]+ (calcd 202.25 for C12H14N2O).

Provenance & Evidence