4-Toluenesulfonyl chloride → Tetrahydrofuran-3-YL 4-methylbenzenesulfonate, (3R)-

참여 물질

반응 단계

To a solution of (R)-tetrahydrofuran-3-ol (25.4 g) in dichloromethane (250 mL) and pyridine (60 mL) is added at 0° C. N,N-dimethylaminopyridine (DMAP; 1 g) and p-toluene-sulfonylchloride (73 g) in portions. The mixture is stirred for 12 hours at room temperature, diluted with dichloromethane and washed with 1 M aqueous HCl solution and brine. After drying (MgSO4) the solvent is evaporated and the residue is chromatographed on silica gel (dichloromethane/methanol 100:0→95:5) to give the title compound. Yield: 59.5 g; Mass spectrum (ESI+): m/z=243 [M+H]+.

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