反应详情

The nitro group of 2-methoxy-5-methyl-3-nitro-7-(trifluoroacetyl)-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepine (40.0 mg, 120 μmol) of was reduced with 10% Pd/C in EtOH (5 ml) under H2 (1 attn). After 2 h of stirring at room temperature, the reaction mixture was filtered through a pad of Celite and rinsed with MeOH. 2-methoxy-5-methyl-7-(trifluoroacetyl)-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepin-3-amine (35 mg, 96%) was obtained after removal of solvent. MS (ESI) m/z 304. Removal of the trifluoroacetyl group was carried out as described above and gave 21.0 mg (88%) of 2-methoxy-5-methyl-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepin-3-amine. 1H-NMR (CDCl3) δ 6.72 (s, 1H), 3.93 (s, 3H), 3.20-2.80 (m, 6H), 2.74 (dd, 1H), 2.76 (1H), 1.28 (d, 3 H) ppm.

1. filtrationthe reaction mixture was filtered through a pad of Celite
2. washrinsed with MeOH