Borane;tetrahydrofuran → HCID 57429430, compound

Participants

Reaction Steps

A mixture of 2-(4-(6-methoxy-1-oxoisoindolin-2-yl)phenyl)propanoic acid (0.102 g, 0.33 mmol) and borane-tetrahydrofuran complex (0.83 mL, 1 M in tetrahydrofuran, 0.83 mmol) in tetrahydrofuran (2 mL) at 0° C. was stirred for 3 h. After this time, the reaction mixture was diluted with water (5 mL) and ethyl acetate (5 mL) and the mixture stirred vigorously for 18 h at room temperature. The aqueous layer was separated and extracted with ethyl acetate (25 mL), and the combined organic layers dried over sodium sulfate, filtered, and concentrated under reduced pressure to afford an off-white solid. Purification by flash chromatography (silica, 1:1 ethyl acetate/hexanes) afforded 2-(4-(1-hydroxypropan-2-yl)phenyl)-6-methoxyisoindolin-1-one (0.081 g, 84%) as a white solid: mp 135-138° C.; 1H NMR (300 MHz, CDCl3) δ 7.81 (dd, J=8.6, 19 Hz, 2H), 7.41-7.39 (m, 2H), 7.31 (d, J=8.6 Hz, 2H), 7.16 (dd, J=8.4, 2.4 Hz, 1H), 4.79 (s, 2H), 3.89 (s, 3H), 3.72 (d, J=6.8 Hz, 2H), 2.98 (q, J=6.9 Hz, 1H), 1.30 (d, J=7.0 Hz, 3H); ESI MS m/z 298 [M+H]+.

Provenance & Evidence