Hydrochloric Acid → 4-(4-Carboxyphenyl)-1-(3,5-dichloro-2-hydroxybenzylidene)-3-thiosemicarbazide

Participants

Reaction Steps

Concentrated aqueous hydrochloric acid (1 mL) was added to a stirred solution of 4-(4-carboxyphenyl)-3-thiosemicarbazide (213 mg, 1.00 mmol) and 3,5-dichloro-2-hydroxybenzaldehyde (198 mg, 1.04 mmol) in dimethylformamide (20 mL). The mixture was stirred for 18 h, water was added and the precipitate filtered, washed (water) and dried to give the title compound (212 mg, 55%) as a solid. MS (ES−) m/e 382, 384 [M−H]-.

Provenance & Evidence