Hydrochloric Acid → 10-ethyl-8,9-dihydro-7-[(5-methyl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one hydrochloride

Participants

Reaction Conditions

Reaction Steps

A suspension of 10-ethyl-8,9-dihydro-7-[(5-methyl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one (285 mg) in methanol (20 ml) was treated with 12N hydrochloric acid (0.2 ml) and heated at 60° C. After concentration of the solution under reduced pressure to 3 ml, the solution was diluted with ether (6 ml) and allowed to stand at room temperature. The crystals were collected and washed with ether to give 10-ethyl-8,9-dihydro-7-[(5-methyl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one hydrochloride (273 mg).

Provenance & Evidence