反应详情

1 g (3.4 mmol) of 2,3-difluoronaphthacene-5,12-dione, 0.94 g (6.8 mmol) of potassium carbonate, 0.47 g (6.8 mmol) of sodium methanethiolate and 20 ml of tetrahydrofuran are stirred at 25° C. for 2.5 hours. The mixture is poured into dilute hydrochloric acid and extracted with THF/toluene. The organic phase is dried over sodium sulfate and evaporated. The residue is chromatographed on silica gel with toluene. Yield 0.55 g (50%); melting point 230°-235° C.

1. extractionextracted with THF/toluene
2. dry with materialThe organic phase is dried over sodium sulfate
3. customevaporated
4. customThe residue is chromatographed on silica gel with toluene