Hydrochloric Acid → HCID 178430957, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 7-(2-chlorophenyl)-4-methyl-5,6,7,8-tetrahydrocinnolin-5-one-1-oxide (173 mg) and aminoguanidine hydrochloride (73 mg) were added ethanol (4 ml) and concentrated hydrochloric acid (0.07 ml), and the mixture was stirred at 90° C. (bath temperature) for 3.5 hours. The reaction solution was cooled to room temperature, and the resulting crystals were filtered and dried to give 7-(2-chlorophenyl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydrocinnolin-1-oxide hydrochloride (Compound 159) (195 mg) as colorless crystals.

Provenance & Evidence