反应详情

温度

100 °C

A mixture of 2,2′-Diiodo-biphenyl-4,4′-dicarboxylic acid (450 mg, 0.912 mmol, 1 eq.) and potassium carbonate (189 mg, 1.5 eq.) in 5 mL DMF was heated to 100° C. to give a reddish brown mixture. Sodium sulfide (36 mg, 0.5 eq.) and copper(I) iodide (17 mg, 0.1 eq.) were added and reaction mixture was heated to 150° C. under a slow stream of Ar. CuI (100 mg) was added and followed by sodium sulfide (100 mg). The reaction was kept at 150° C. overnight. The reaction mixture was diluted with 25 mL water and active carbon (10 g) was added. The mixture was refluxed for 10 minutes then filtered through CELITE pad into 6N HCL (50 mL) and washed with water. The solid was formed and cooled to room temperature and filtered and washed with and dried to give product Dibenzothiophene-3,7-dicarboxylic acid (179 mg, 72%).

1. customto give a reddish brown mixture
2. customreaction mixture
3. temperaturewas heated to 150° C. under a slow stream of Ar
4. additionwas added
5. temperatureThe mixture was refluxed for 10 minutes
6. filtrationthen filtered through CELITE pad into 6N HCL (50 mL)
7. washwashed with water
8. customThe solid was formed
9. temperaturecooled to room temperature
10. filtrationfiltered
11. washwashed with and
12. customdried