m-Chloroperbenzoic acid → HCID 59467914, compound

Participants

Reaction Steps

To a solution of compound 64 (167 mg, 0.49 mmol) in DCM (4 mL) cooled in a salt-ice bath was added a solution of mCPBA (77%, 110 mg, 0.49 mmol) in DCM (4 mL) drop wise. The reaction mixture was stirred for 1 hr. After diluting with DCM (30 mL), the solution washed with Na2S2O3, NaHCO3, dried over Na2SO4 and concentrated in vacuum. The crude material was purified by flash chromatography on silica gel eluting with EtOAc/hexanes (20˜50%) to give compound 65 as a white solid (164 mg, 94%). MS (APCI): m/z 357 [M+H]+. Anal. Calcd for C18H16N2O2S2: C, 60.65; H, 4.52; N, 7.86. Found: C, 60.44; H, 4.66; N, 7.73.

Provenance & Evidence