反应详情

温度

140 °C

A mixture of 77 (312 mg, 0.864 mmol), tert-butyl acrylate (0.369 mL, 2.55 mmol), Pd(OAc)2 (15.0 mg, 0.067 mmol), P(o-tolyl)3 (40.0 mg, 0.131 mmol), and Et3N (0.520 mL, 3.73 mmol) were heated under microwave irradiation at 140° C. for 30 min. Water (30 mL) was added and the mixture was extracted with Et2O (3×20 mL). The combined ethereal extracts were washed with water (30 mL), brine (30 mL), and dried over MgSO4. Concentration followed by flash chromatography (20:1 to 5:1 hexanes:EtOAc) afforded 220 mg (62%) of compound 78. 1H NMR (400 MHz, CDCl3): δ 1.52 (s, 9H), 1.58 (m, 6H), 2.07 (br s, 2H), 2.25 (br s, 2H), 4.78 (s, 1H), 6.30 (d, J=16.0 Hz, 1H), 6.74 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.4 Hz, 2H), 7.08 (t, J=7.6 Hz, 1H), 7.13-7.18 (m, 2H), 7.49 (d, J=16.0 Hz, 1H).

1. extractionthe mixture was extracted with Et2O (3×20 mL)
2. washThe combined ethereal extracts were washed with water (30 mL), brine (30 mL)
3. dry with materialdried over MgSO4
4. concentrationConcentration