m-Chloroperbenzoic acid → (1R,2R,3S,5S)-3-(Hydroxymethyl)-6-oxabicyclo[3.1.0]hexan-2-ol

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Reaction Conditions

Reaction Steps

(1S,5S)-5-(Hydroxymethyl)cyclopent-2-en-1-ol (3.19 g, 27.9 mmol) was dissolved in DCM (143 mL) and the solution was cooled to 0° C. 3-Chloroperbenzoic acid (7.52 g, 33.5 mmol) was added and the mixture was stirred at 23° C. for 4 h. TLC indicated complete conversion. Silica gel (20 g) was added, the mixture was concentrated to dryness and was purified via silica gel chromatography eluting with a gradient of 0 to 100% EtOAc in DCM to afford the title compound (2.75 g, 76%). 1H NMR (CDCl3, 300 MHz) δ: 4.58 (d, J=8.1 Hz, 1H), 3.69 (s, 1H), 3.68 (s, 1H), 3.60 (s, 1H), 3.52 (s, 1H), 2.47-2.40 (m, 1H), 2.14 (ddd, J=1.5, 10.2, 15.3 Hz, 1H), 2.01 (dd, J=1.5, 15.3 Hz, 1H), 1.62 (bs, 2H) ppm. LC/MS: Rt=0.37 min, ES+ 131 (AA standard).

Provenance & Evidence