反应详情

According to the procedure described in Example 6A Step 3, a mixture of ethyl 4,5-diethoxy-2-nitrobenzoate (7.17 g, 25.3 mmol) and Pd/C (10%, 0.7 g) in EtOAc (150 mL) was stirred under 1 atmosphere of hydrogen at room temperature overnight, to afford ethyl 2-amino-4,5-diethoxybenzoate as a solid (6.401 g, 99%)1H NMR (300 MHz, CDCl3) δ 7.36 (s, 1H), 6.14 (s, 1H), 5.60 (br, 2H), 4.30 (q, 2H), 4.05 (m, 4H), 1.44 (t, 3H), 1.38 (m, 6H); LC-MS (ESI) m/z 254 (M+H)+.