反应详情

2.30 g of 6-chloro-N-((2-chlorothiazole-5-yl)methyl)-N-ethyl-3-nitropyridine-2-amine (prepared in example 1) in ethanol (5 mL) was added dropwise to 0.16 g of sodium metal in 10 mL of anhydrous ethanol, the reaction mixture stirred at the room temperature for 2 to 6 hours, then treated according to example 1 to obtain 0.68 g of 6-ethoxy-N-((2-chlorothiazole-5-yl)methyl)-N-ethyl-3-nitropyridine-2-amine, at 98.0% purity, as a yellow viscous liquid, yield of 28.2%. GC-MS (M+) (EI, 70 eV, m/z) calc: 342. found: 342. 1H NMR (CDCl3/TMS, 300 MHz) δ (ppm) 1.100 (t, J=6.9 Hz, 3H, CH3), 1.322 (t, J=6.9 Hz, 3H, CH3), 3.189 (q, J=6.9 Hz, 2H, CH2), 4.295 (q, J=6.9 Hz, 2H, CH2), 4.754 (s, 2H, CH2), 6.108 (d, J=9.0 Hz, 1H, Py H), 7.397 (s, 1H, Thiazole H), 8.084 (d, J=9.0 Hz, 1H, Py H).

1. additiontreated