Triphenylphosphine → HCID 70655188, compound

Participants

Reaction Steps

To a solution of 3,5-difluorophenol (1.0 equiv.), tetrahydro-2H-pyran-4-ol (1.2 equiv.), and triphenylphosphine (2.0 equiv.) in THF (0.33 M) at 0° C. was added DIAD (2.0 equiv.) dropwise. The reaction mixture was stirred at rt overnight. The mixture was concentrated and purified by flash chromatography over silica gel (heptanes:ethyl acetate gradient) to give 4-(3,5-difluorophenoxy)tetrahydro-2H-pyran in 90% yield. 1H NMR (400 MHz, <cdcl3>) δ ppm 1.72-1.84 (m, 2H), 1.96-2.09 (m, 2H), 3.59 (ddd, J=11.64, 8.31, 3.52 Hz, 2H), 3.90-4.04 (m, 2H), 4.44 (tt, J=7.78, 3.77 Hz, 1H), 6.32-6.53 (m, 3H).

Provenance & Evidence