反应详情

119C was prepared from 119B using a procedure similar to that used in the preparation of 118F. 1H NMR (400 MHz, CDCl3) δ ppm 1.21 (t, J=7.69 Hz, 3H) 2.59 (q, J=7.47 Hz, 2H) 3.76 (s, 3H) 3.87 (s, 3H) 5.38 (s, 1H) 6.65-6.85 (m, 2H).