Triethyl phosphite → HCID 86584892, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (S)-1-(2-bromomethyl-benzoyl)-5-oxo-pyrrolidine-2-carboxylic acid tert-butyl ester (898 mg, 2.4 mmol) and triethylphosphite (432 mg, 2.4 mmol) was heated at 70° C. for 4 h. After cooling, the residue was purified by flash chromatography (ethyl acetate) to afford the title compound as a clear viscous oil (872 mg, 84%): 1H NMR (400 MHz, CDCl3) δ 1.17 (3H, t, J=7.0 Hz), 1.26 (3H, t, J=7.0 Hz), 1.53 (9H, s), 2.07-2.14 (1H, m), 2.43-2.69 (3H, m), 3.12 (1H, dd, J 22.4, 15.0 Hz), 3.62 (1H, dd, J 22.1, 15.0 Hz), 3.84-4.06 (4H, m), 4.87 (1H, dd, J 8.9, 4.8 Hz), 7.31-7.46 (4H, m).

Provenance & Evidence