反应详情

Following the procedure as described in Example 13, making variations as required to replace 4-(trifluoromethyl)benzyl bromide with benzyl bromide to react with ethyl 3-methyl-5-(2-oxoimidazolidin-1-yl)thiophene-2-carboxylate, the title compound was obtained as a colorless solid in 94% yield: 1H NMR (300 MHz, CDCl3) δ 7.39-7.25 (m, 5H), 6.15 (s, 1H), 4.48 (s, 2H), 4.28 (q, J=7.1 Hz, 2H), 3.83-3.75 (m, 2H), 3.48-3.40 (m, 2H), 2.49 (s, 3H), 1.34 (t, J=7.1 Hz, 3H); MS (ES+) m/z 345.3 (M+1).