N-Phenyl-4-piperidinecarboxamide → 8-methoxy-5-methyl-11-(1-methyl-4-piperidyl)-5H-dibenzo[b,e]-[1,4]diazepine

Participants

Reaction Steps

The general procedures of Examples 1 and 2 are repeated. The compound 4-methoxy-N-methyl-2-nitrodiphenylamine is prepared and reduced to the corresponding 2-amino derivative which is converted to 5'-methoxy-1-methyl-2'-(N-methylanilino)isonipecotanilide. This isonipecotanilide base is treated with phosphorus pentoxide/phosphorus oxychloride, the cyclized product is isolated and purified and 8-methoxy-5-methyl-11-(1-methyl-4-piperidyl)-5H-dibenzo[b,e]-[1,4]diazepine is obtained.

Provenance & Evidence