反应详情

A mixture of Example 695J (118 mg, 0.6 mmol), 3-(2,2-dimethyl-[1,3]dioxolan-4-yl)-propan-1-ol (131.6 mg, 0.9 mmol), polymer-supported PPh3 (400 mg, 1.2 mmol), and DBAD (0.268 mg, 1.2 mmol) in THF (3 mL) was stirred at room temperature for 8 hours. The reaction mixture was loaded onto the silica gel column and eluted with 100% EtOActo give 0.39 g of the desired product (67%). MS (DCI) m/e 326 (M+H)+, 1H NMR (500 MHz, DMSO-d6): □ 8.94 (s, 1H), 8.23 (d, J=5.49 Hz, 1H), 7.88 (s, 1H), 7.41 (d, J=5.49 Hz, 1H), 4.37-4.40 (m, 2H), 3.91-3.97 (m, 2H), 3.47 (dd, J=7.63, 6.41 Hz, 1H), 2.07 (m, 1H), 1.98 (m, 1H), 1.34 (s, 3H), 1.24 (s, 3H).

1. washeluted with 100%