HCID 86740156, compound → HCID 178515193, compound

Participants

Reaction Steps

A mixture of ethyl 4-(2-thiazolylhydrazino)-quinoline-3-carboxylate hydrochloride (1.16 g) and 20 ml of n-butanol is heated under reflux for 5 hours, cooled to room temperature and filtered. The resulting solid is washed with ethanol and ether, and dried to yield 2-(2-thiazolyl)-pyrazolo[4,3-c]quinolin-3(5H)-one, m.p. over 350°; IR (KBr) 818, 840, 871, 891 cm-1.

Provenance & Evidence