反应详情

温度

90 °C

To a solution of methyl 5-cyano-2-cyclobutyl-4-methylbenzoate (219.4, 2.0 g, 8.73 mmol) in EtOH (10 ml) was added anhydrous hydrazine (2 ml, excess) at room temperature. The mixture was heated at 90° C. overnight. After cooling to ambient temperature, the mixture was partitioned between water (60 ml) and EtOAc (200 ml). The EtOAc layer was washed with water (×2), brine, dried with Na2SO4, and concentrated to give the product as a white solid. Yield: 1.9 g, 95%. m/z (ES+) 230 (M+H)+. 1H NMR (400 MHz, Chloroform-d) δ 7.52 (s, 1H), 7.32 (s, 1H), 6.91 (br, 1H), 4.08 (br, 2H), 3.89 (m, 1H), 2.61-2.52 (m, 3H), 2.42-2.28 (m, 2H), 2.18-1.98 (m, 3H), 1.91-1.78 (m, 1H).

1. temperatureAfter cooling to ambient temperature
2. customthe mixture was partitioned between water (60 ml) and EtOAc (200 ml)
3. washThe EtOAc layer was washed with water (×2), brine
4. dry with materialdried with Na2SO4
5. concentrationconcentrated