反应详情

Following the procedure as described in Example 50, making variations as required to replace (2-bromoethoxy)(tert-butyl)dimethylsilane with 2-bromoacetophenone to react with ethyl 3-methyl-5-(2-oxoimidazolidin-1-yl)thiophene-2-carboxylate, the title compound was obtained as a colorless solid in 39% yield: 1H NMR (300 MHz, CDCl3) δ 7.95 (d, J=8.3 Hz, 2H), 7.60-7.56 (m, 1H), 7.52-7.44 (m, 2H), 6.18 (s, 1H), 4.73 (s, 2H), 4.24 (q, J=7.1 Hz, 2H), 3.94-3.86 (m, 2H), 3.76-3.68 (m, 2H), 2.48 (s, 3H), 1.30 (t, J=7.1 Hz, 3H); MS (ES+) m/z 373.2 (M+1).