Water → {4-[2,4-Bis(methoxymethoxy)phenyl]cyclohexylidene}acetonitrile

Participants

Reaction Steps

To a round bottomed flask equipped was added sodium hydride (40 mg, 60% dispersion in mineral oil) and 1, 2-dimethoxyethane (10 ml). Diethyl cyanomethylphosphonate (102 μl, 0.95 mmol) was added and the reaction mixture allowed to warm to room temperature. 4-[(2,4-Bis(methoxymethoxy)phenyl)]cyclohexanone (200 mg) was added as a solution in 1,2-dimethoxyethane (10 ml) and the reaction mixture stirred for 17 hr at room temperature. The reaction mixture was poured into a separating funnel containing water (50 ml) and diethyl ether (50 ml). The layers were separated and the aqueous phase extracted with diethyl ether (2×20 ml). The combined organic layers were washed with brine (20 ml), dried over magnesium sulfate, filtered and concentrated in vacuo, to give an oil. Purification via flash column chromatography (SiO2-ethyl acetate/petroleum ether, 1:2, v/v) afforded the title compound (141 mg, 66%) as a pale yellow oil. δH(CD3OD) 1.57-1.70 (2H, m), 2.02-2.25 (2H, m), 2.34-2.49 (2H, m), 2.60 (1H, m), 3.03 (1H, m), 3.24 (1H, m), 3.47 (3H, s), 3.52 (3H, s), 5.17 (2H, s), 5.23(2H, s), 5.33 (1H, s), 6.68 (1H, dd), 6.83 (1H, d), 7.09 (1H, d).

Provenance & Evidence