反应详情

2,5-Dimethoxytetrahydrofuran (17.1 ml, 0.13 M) was added dropwise to a stirred solution of benzenesulphinic acid (17.0 g, 0.12 M) in dry DCM (100ml) containing a suspension of powdered CaCl2 (1.0 g) at room temperature under argon. After 4 h, the solution was washed with water (2×50 ml), dried (Na2SO4) and evaporated. The product was crystallised (diethyl ether/hexane) to give 2-benzenesulphonyl-5-methoxytetrahydrofuran (15 9 g, 55%).

1. additioncontaining
2. washthe solution was washed with water (2×50 ml)
3. dry with materialdried (Na2SO4)
4. customevaporated
5. customThe product was crystallised (diethyl ether/hexane)