Methylamine → HCID 53630783, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-amino-5-chloro-4-methyl-benzenesulfonic acid (3.0 g, 1.35 mmol) in dichloroethane (10 mL) is added sulfuryl chloride (4.4 mL, 3.83 mmol) and stirred at 60° C. After one hour, thionyl chloride (1.3 mL) is added and the mixture is further stirred at 100° C. for 7.0 hours. The mixture is poured into iced water and extracted with ether three times. The organic layer is washed with water and then brine, dried over sodium sulfate, and evaporated in vacuo. 1H-NMR (δ, ppm): 2.35 (s, 3H), 6.68 (s, 1H), 7.75 (s, 1H). This substituted sulfonyl chloride is reacted with a suitable amine. On reaction e.g. with methylamine, 2-amino-5-chloro-4,N-dimethylbenzenesulfonamide is formed.

Provenance & Evidence