反应详情

温度

70 °C

Diisopropylazodicarboxylate (61 mg, 0.6 mmol) was added to a solution of 4-(3-hydroxy-4-methoxyphenyl)-2-pyrrolidone (63 mg, 0.3 mmol), cinnamyl alcohol (43 mg, 0.3 mmol) and triphenyl phosphine (157 mg, 0.6 mmol) in 3 mL of tetrahydrofuran and the reaction mixture was stirred at 70° C. After 12 hours, the same work-up procedure as described in Example 1 gave 70 mg (70%) of 4-(3-cinnamyloxy-4-methoxyphenyl)-2-pyrrolidone: 1H NMR (300 MHz, CDCl3) δ 7.40 (d, J=6.8 Hz, 2H), 7.31 (t, J=6.8 Hz, 2H), 7.25 (d, J=7.2 Hz, 1H), 6.86-6.81 (m, 2H), 6.71 (d, J=15.6 Hz, 1H), 6.42 (m, 1H), 5.92 (b, 1H), 4.76 (dd, J=6.0, 1.2 Hz, 2H), 3.87 (s, 3H), 3.71 (t, J=8.8 Hz, 1H), 3.64-3.56 (m, 1H), 3.35 (t, J=8.8 Hz, 1H).