反应详情

A solution of EXAMPLE 74A (60 mg) in acetic acid (5 mL) at reflux was stirred for 60 minutes and concentrated. The concentrate was purified by chromatography on silica gel with 10% methanol/dichloromethane. 1H NMR (DMSO-d6) δ 9.24 (s, 1H), 8.22 (d, J=7.98 Hz, 2H), 7.96 (s, 1H), 7.75-7.84 (m, 2H), 7.46 (d, J=8.29 Hz, 2H), 3.41 (d, J=12.27 Hz, 2H), 2.99-3.08 (m, 2H), 2.96 (t, J=3.53 Hz, 1H), 2.01 (d, J=12.27 Hz, 2H), 1.79-1.90 (m, 2H).

1. concentrationconcentrated
2. customThe concentrate was purified by chromatography on silica gel with 10% methanol/dichloromethane