2-(Benzenesulfonyl)-3-phenyloxaziridine → HCID 77561083, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 0.52 mL (0.52 mmol) of 1.0M sodium hexamethylsilazide in THF at −78° C. was added 153 mg (0.44 mmol) of (R/S)-1-(4-nonylphenyl)methyl-pyrrolidin-3-yl carboxylic acid, methyl ester (from EXAMPLE 34, Step C) in 1 mL of THF while maintaining the internal temperature at less −72° C. After 20 min, 172 mg (0.65 mmol) of 2-(phenylsulfonyl)-3-phenyloxaziridine (Davis Reagent) in 1 mL of THF was added while maintaining the internal temperature at less −69° C. After stirring for 1.25 h at −78° C., the reaction was quenched with 1N NaHCO3 and warmed to rt. After removing volatiles under reduced pressure, the reaction mixture was diluted with 50 mL of 1N NaHCO3 and 50 mL of sat'd NaCl. The aqueous phase was extracted with 3×50 mL of CH2Cl2. The combined organic layers were dried over Na2SO4 and concentrated. The residue was purified by flash chromatography using 4:1 v/v hexane/EtOAc and 4:1 v/v hexane/acetone as the gradient to afford 11 mg (7%) of the title compound as a colorless film: RF: 0.39 (4:1 v/v hexane/acetone); 1H-NMR (500 MHz) δ 0.90 (t, J=6.8, 3H), 1.28-1.33 (m, 12H), 1.59-1.64 (m, 2H), 2.02 (m, 1H), 2.42 (m, 1H), 2.60 (t, J=7.8, 2H), 2.67 (m, 1H), 2.86 (ABq, J=10.1, 2H), 2.97 (m, 1H), 3.69 (s, 2H), 3.82 (s, 3H), 7.14 (d, J=7.9, 2H), 7.26 (d, J=7.9, 2H).

Provenance & Evidence