Hydrochloric Acid → Furan-2-sulfonyl Chloride

Participants

Reaction Steps

Ninety ml of water, 410 ml of conc. HCl, and 68.0 g of lithium 2-furansulfinate were stirred and cooled to 10°-15°. Liquid chlorine (12.3 ml, 39.4 g) was added dropwise over a 30-minute period. The mixture was stirred an additional 30 minutes at 5°, poured onto ice and extracted with methylene chloride. Evaporation of the methylene chloride yielded 44 g of 2-furansulfonyl chloride, b.p. 95° at 7 mm Hg; IR (neat) 3400 (m), 3120, 1800, 1550 (m), 1450 (S), 1380 (VS), 1210, 1160, 1120 (VS), 1035 (m), 1010 (VS), 913, 882 (S).

Provenance & Evidence