反应详情

To a solution of 5-(7-bromo-3-hydroxynaphthalen-2-yl)-1,1-dioxo-1,2,5-thiadiazolidin-3-one (3) (0.998 g, 2.8 mmol) in MeOH is added KHCO3 (5.6 mL, 0.5M). To this salt in DMF (25 mL) at 0° C. is added potassium t-butoxide (2.94 mL, 1M). The reaction mixture is stirred for 1 min before benzoyl chloride (0.357 mL, 3.08 mmol) is added and the mixture is stirred for 1 min. Sat. NaHCO3 solution is added and it is acidified with 1 N HCl solution. The mixture is extracted with EtOAc, washed with brine and dried with Na2SO4. The organic layer is concentrated to give the title compound.

1. additionis added
2. extractionThe mixture is extracted with EtOAc
3. washwashed with brine
4. dry with materialdried with Na2SO4
5. concentrationThe organic layer is concentrated