反应详情

To a solution of (E)-3-[3-benzyloxy-4-(1,1,4-trioxo-1,2,5-thiadiazolidin-2-yl)-phenyl]-acrylic acid tert-butyl ester (2.2 g, 5.18 mmol) in THF (14 mL)/MeOH (7 mL) is added 3.5 mL (20.7 mmol) of 6N NaOH solution and the mixture is stirred at RT for 18 h. The solvent is removed under reduced pressure and water is added to the residue. The mixture is acidified with 1N HCl and is extracted with methylene chloride. The organic phase is washed with water and brine then is dried over sodium sulfate. The solvent is removed under reduced pressure to give the title compound as a reddish solid: ): (M−1)−=387.

1. customThe solvent is removed under reduced pressure and water
2. additionis added to the residue
3. extractionis extracted with methylene chloride
4. washThe organic phase is washed with water and brine
5. dry with materialthen is dried over sodium sulfate
6. customThe solvent is removed under reduced pressure