2-Chloro-4-nitrobenzoic acid → HCID 966782, compound

Participants

Reaction Steps

A solution of 2-chloro-4-nitrobenzoic acid (6.00 g, 29.8 mmol) in thionyl chloride (20 ml) was heated at reflux for 2.5 hours. The reaction was cooled, the excess thionyl chloride was evaporated in vacuo and the residue was azeotroped with toluene (2×25 ml). The residue was taken up in toluene (35 ml), 2-aminobenzonitrile (1.75 g, 14.8 mmol) was added and the reaction heated at reflux for 2 hours. The reaction was cooled, the solvent was removed in vacuo and the residue was absorbed onto silica gel. Purification by flash chromatography on silica gel, eluting with dichloromethane, yielded N-(2-cyanophenyl)-2-chloro-4-nitrobenzamide (1.30 g, 27% yield) as a pale yellow solid:

Provenance & Evidence