Cornforth reagent → HCID 68840242, compound

Participants

Reaction Steps

A suspension of Example 8A (0.45g, 1.48 mmol), pyridinium dichromate (2.4 g, 5.92 mmol), celite (0.53 g), 70% t-BuOOH/water (0.82 mL, 5.92 mmol) in benzene (11 mL) was stirred at 25° C. for 2 h. The benzene layer was separated and the mixture was extracted with ethyl acetate. The combined organic layers were concentrated in vacuo. Column chromatography on silica (5%→15% ethyl acetate/hexane) afforded the title compound (0.32 g, 67%). 1H NMR (300 MHz, DMSO-d6) δ ppm 0.17-0.41 (m, 1H), 0.60-0.81 (m, 10H), 2.16-2.36 (m, 2H), 3.56 (s, 3H), 3.84 (s, 3H), 6.04 (s, 1H), 7.41 (d, J=7.72 Hz, 1H), 7.51 (t, J=6.99 Hz, 1H), 7.60-7.75 (m, 1H), 7.89-8.09 (m, 1H)); MS (ESI) m/z 316.9 (M+H)+.

Provenance & Evidence