2,2-Difluoro-3-Tetrahydropyranyloxypropyl Trifluoromethanesulfonate → HCID 19937334, compound

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Reaction Conditions

Reaction Steps

A mixture of 2,2-difluoro-3-tetrahydropyranyloxypropyl trifluoromethanesulfonate (2.3 g, 7 mmol), potassium phthalimide (1.4 g, 7.7 mmol) and anhydrous dimethylformamide (50 ml) under nitrogen was stirred and heated at 85° C. overnight. After cooling, salts are filtered off, and the solvent was removed in vacuo. The residue was taken up in dichloromethane (100 ml), washed with 0.5M NaOH (30 ml) and brine. The organic phase was separated, dried over magnesium sulfate and concentrated. The desired compound 2,2-difluoro-3-phthalimido-1-tetrahydropyranyloxypropane was purified by flash chromatography on silica gel (ethyl acetate:hexane; 20:80) (2 g, 90%).

Provenance & Evidence