Ammonium formate → HCID 178463787, compound

Participants

Reaction Conditions

Reaction Steps

To the solution of 5-(diethylamino)-2,4-dinitro-1-(2-methoxybenzoyl)aminobenzene (388 mg, 1.0 mmol) in 10 mL of 1,4-dioxane and 10 mL of methanol, was added ammonium formate (1.5 g) and 10% Pd/C (200 mg) under nitrogen atmosphere. The reaction mixture was stirred for 30 min. The Pd/C and excess ammonium formate were filtered. Conc. HCl (10 mL) was added to the filtrate. After heating at 75° C. for 18 h, the reaction mixture was basified to pH 8 with saturated K2CO3 solution. The reaction mixture was diluted with 200 mL of ethyl acetate, washed with brine, and dried over anhydrous MgSO4. The reaction mixture was filtered and concentrated in vacuo to afford the crude product (280 mg, 90% yield). The crude product was then purified by column chromatography on silica gel using EtOAc as the eluant to afford the desired product (188 mg, 61% yield) as a brown solid: 1H-NMR (300 MHz, CDCl3) δ 1.01 (t, 6H, J=7.2 Hz), 3.01 (q, 4H, J=7.2 Hz), 4.05 (s, 3H), 6.92 (s, 1H), 7.03 (d, 1H, J=8.1 Hz), 7.11 (t, 1H, J=8.1 Hz), 7.36 (t, 1H, J=6.9), 7.41 (s, 1H), 8.52 (d, 1H, J=7.8 Hz); ESI MS m/z 311.2 [M+H]+.

Provenance & Evidence