Triethyl phosphonoacetate → HCID 13952644, compound

Participants

Reaction Steps

Ethyl 2-(diethoxyphosphoryl)acetate (5.0 ml, 25.2 mmol) was added to a suspension of sodium hydride (60% in mineral oil, 1.10 g, 27.6 mmol) in THF (40 ml) at 0°. After 30 min at room temperature, a solution of 4-nitrobenzylbromide (5.42 g, 25.2 mmol) in THF (40 ml) was added over 30 min. The reaction mixture was stirred for 2 h at room temperature, quenched with water and partitioned between Et2O and water. The aqueous phase was extracted with Et2O and the combined organic layers washed with brine, dried (MgSO4) and evaporated in vacuo. Column chromatography (silica; MeOH/DCM, 1:49) gave the title compound as a pale yellow oil (2.01 g): δH (CDCl3) 8.13 (2H, d, J 8.8 Hz), 7.37 (2H, d, J 8.8 Hz), 4.23-4.06 (6H, m), 3.37-3.20 (3H, m), 1.35 (6H, t, J 7.1 Hz), 1.16 (3H, t, J 7.1 Hz): m/z (El+, 70V) 360.

Provenance & Evidence