m-Toluidine → 4-(3-Methylanilino)pyridine-3-sulfonamide--hydrogen chloride (1/1)

Participants

Reaction Steps

A 2-L, three-necked flask equipped with mechanical stirrer, thermometer and condenser was charged with 4-chloro-3-pyridinesulfonamide I (300.0 g, 1.56 mol), m-toluidine (200.3 g, 1.87 mol) and 1200 mL n-butanol. The reaction mixture was heated for 2-4 hours and then cooled to room temperature. The solid was filtered and washed with n-butanol. After drying, 4-[(3-methylphenyl)amino]-3-pyridinesulfonamide hydrochloride (457.1 g, 98%) was obtained as pale-yellow solid having a purity of 99.96% by HPLC.

Provenance & Evidence