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Step 1a: Preparation of 7-fluoro-1-methyl-1H-indole-2,3-dione (6) 7-Fluoro-1H-indole-2,3-dione (5, prepared according to the method of Gassman as described in U.S. Pat. No. 4,188,325, 3.00 g, 0.182 mol), iodomethane (3.40 ml, 0.545 mol) and potassium carbonate (4.92 g, 0.0363 mol) in DMF (15 ml) are stirred at room temperature for 1 hour. The reaction mixture is diluted with cold water and the resulting precipitate filtered and dried to give the title compound as a solid. HPLC r.t. 4.01 min; MS for C9H6FNO2 m/z 180.0 (M+H)+.
Keep reading other articles of 7-Fluoroisatin! Don’t worry, you don’t need a PhD in chemistry to understand the explanations! I believe this compound will play a more active role in future production and life.
Reference:
Patent; Josyula, Vara Prasad Venkata Nagendra; Gordeev, Mikhail; Luehr, Gary; US2006/229349; (2006); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem