Tetrahydrofuran → Methyl 4,5-diamino-3-fluoro-2-(2-methyl-phenylamino)benzoate

Participants

Reaction Steps

To a mixture comprised of methyl 4-amino-3-fluoro-2-(2-methyl-phenylamino)-5-nitrobenzoate (2.52 g, 0.00789 mol), tetrahydrofuran (50 ml), methanol (50 ml) and washed Raney nickel (0.5 g) was initially applied 48.6 psi of hydrogen gas at 30.2° C. in a shaker for 4 hours 48 minutes. The mixture was filtered and the filtrate concentrated in vacuo to afford 2.20 g of a salmon-colored amorphous solid; 96% yield; 1H-NMR (400 MHz; DMSO) δ7.84 (s, 1H), 7.04 (d, 1H, J=7.1 Hz), 6.98 (d, 1H, J=1.2 Hz), 6.95-6.91 (m, 1H), 6.68-6.64 (m, 1H), 6.40-6.36 (m, 1H), 5.39 (s, 2H), 4.73 (s, 2H), 3.66 (s, 3H), 2.21 (s, 3H); 19F-NMR (376 MHz; DMSO) δ−139.66 (s).

Provenance & Evidence