Hydrochloric Acid → 7-(2-Bromothiophen-3-yl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydroquinoline hydrochloride

Participants

Reaction Conditions

Reaction Steps

To a mixture of 7-(2-bromothiophen-3-yl)-4-methyl-5,6,7,8-tetrahydroquinolin-5-one (0.12 g) and aminoguanidine hydrochloride (45 mg) were added ethanol (2 ml) and concentrated hydrochloric acid (0.05 ml), and the mixture was stirred at 90° C. for 13 hours and cooled. Precipitated crystals were filtered, washed with ethanol and dried to give 7-(2-bromothiophen-3-yl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydroquinoline hydrochloride (Compound 123) (0.14 g) as pale yellow crystals.

Provenance & Evidence