Methyl Ethyl Ketone → HCID 21486936, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3.0 parts of the N-(2-chloroethyl)-6,7-dimethoxy-1-phenyl-3,4-dihydro-2(1H)-isoquinolinecarboxamide prepared in Example 8 and 4.3 parts of piperidine in approximately 40 parts of 2-butanone is heated at 65°C. for 20 hours. The reaction mixture is then stripped in vacuo and the residue taken up in dilute aqueous potassium bicarbonate solution and methylene chloride. The organic layer is dried and stripped in vacuo and the residue is crystallized from ether to afford 6,7-dimethoxy-1-phenyl-N-(2-piperidinoethyl)-3,4-dihydro-2(1H)-isoquinolinecarboxamide, melting at about 101°-102°C.

Provenance & Evidence