反应详情

To a stirred solution of 5-[2-benzyloxy-4-((E)-hex-1-enyl)-phenyl]-1,1-dioxo-1,2,5-thiadiazolidin-3-one (10 mg, 0.275 mmol) in acetone (10 mL) is added a solution of DMDO (0.56 mM, 4.9 mL, 0.413 mmol) in acetone. This mixture is stirred at RT for 1 h, at which point LCMS of the reaction shows clean conversion to the desired epoxide. The reaction mixture is diluted with EtOAc and concentrated 3× to fully remove the volatile DMDO. The remaining EtOAc is removed under reduced pressure to afford the title compound which is used directly in the next step.

1. concentrationconcentrated 3×
2. customto fully remove the volatile DMDO
3. customThe remaining EtOAc is removed under reduced pressure