Hydrochloric Acid → HCID 58531394, compound

Participants

Reaction Steps

To a solution of 3,5-dichloro-N-(4-fluorobenzyl)-N-(3-(4-fluorophenoxy)-5-(hydroxymethyl)benzyl)-2-hydroxybenzenesulfonamide (1.1 g, 1.895 mmol) and methanesulfonyl chloride (0.147 mL, 1.895 mmol) in EtOAc at −30° C. was added Et3N (0.4 mL, 2.87 mmol) under Ar atm. The mixture was stirred for 1 h, but only a small amount of product was produced. Thus, additional methanesulfonyl chloride (0.25 mL) and Et3N (0.6 mL) were added at −30° C. The mixture was slowly warmed to rt, stirred at rt for 2 h and treated with 1N aq HCl and EtOAc. The EtOAc layer was separated, washed with water, dried over MgSO4 and concentrated in vacuo to obtain the desired product as a viscous material (˜1.4 g). This material was used directly for the next step without further purification. 1H NMR (CDCl3): δ 7.61 (d, J=2.8 Hz, 1H), 7.57 (d, J=2.2 Hz, 1H), 7.07-6.89 (m, 8H), 6.82 (d, J=1.6 Hz, 2H), 6.63 (s, 1H), 5.06 (s, 2H), 4.37 (s, 2H), 4.34 (s, 2H), 2.97 (s, 3H; MS: (M−H)−=656.1.

Provenance & Evidence