Formic Acid → N-(2-fluoro-4-iodophenyl)formamide

To a cooled solution (0° C.) of 4-iodo-2 fluoroaniline (3.05 g, 12.9 mmol) in tetrahydrofuran (15 mL) and toluene (15 mL), was slowly added a mixture of acetic anhydride (1.39 mL, 14.7 mmol) and formic acid (0.83 mL, 22.0 mmol). The reaction mixture was stirred at rt overnight, then diluted with ethyl acetate (100 mL) and 1N aqueous HCl (100 mL). The layers were separated, and the organic layer was washed with water and saturated sodium carbonate solution, and dried over sodium sulfate. The solvent was removed under reduced pressure to afford 2-fluoro-4-iodophenylformamide as an off-white solid (3.32 g, 97%). GC-MS ret. time 2.27 min, m/z 265 (M+); 1H NMR (300 MHz, CDCl3) δ: 7.37–7.51 (m, 3H), 8.13 (t, 1H), 8.46 (s, 1H).

1. customThe layers were separated
2. washthe organic layer was washed with water and saturated sodium carbonate solution
3. dry with materialdried over sodium sulfate
4. customThe solvent was removed under reduced pressure

ORD-Eintrag

ord-5371b54496fc4e8fb22218bcae433455

Quelldatensatz

uspto-grants-2006_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07091228B2