反应详情

19C was prepared in a procedure similar to that of 1A using 19B, 3,4-dimethoxyphenylboronic acid and glyoxylic acid monohydrate. Yield: 55%. 1H NMR (400 MHz, Methanol-d4) δ ppm 3.78 (s, 3H) 3.81 (s, 3H) 5.15 (s, 1H) 6.90 (d, J=7.91 Hz, 1H) 7.01-7.08 (m, 2H) 7.12 (d, J=1.76 Hz, 1H) 7.13-7.17 (m, 2H), LCMS: 349 (M+1).