反应详情

The title compound of Step 1 was prepared according to the general procedure for the synthesis of trans-4-(4-bromophenoxy)tetrahydrofuran-3-ol in Example 2, except that 6-bromopyridin-3-ol was used in place of 4-bromophenol, and the crude product was purified by silica gel chromatography (Gradient: 20% to 70% ethyl acetate in heptane). Yield: 5.24 g, 20.2 mmol, 61%. 1H NMR (500 MHz, CDCl3) δ 3.79 (dd, J=9.9, 1.9 Hz, 1H), 3.87 (dd, J=10.4, 1.8 Hz, 1H), 4.00 (dd, J=9.9, 4.3 Hz, 1H), 4.19 (dd, J=10.4, 4.7 Hz, 1H), 4.38 (br m, 1H), 4.59 (br s, 1H), 4.68 (br d, J=4.4 Hz, 1H), 7.14 (dd, J=8.7, 3.2 Hz, 1H), 7.32 (dd, J=8.7, 0.5 Hz, 1H), 8.01 (br d, J=3.1 Hz, 1H).

1. customthe crude product was purified by silica gel chromatography (Gradient: 20% to 70% ethyl acetate in heptane)