7-Hydroxyisoflavone → 3-Phenylchroman-7-ol

Participants

Reaction Steps

3-Phenylchroman-7-ol was prepared as described for 3-(3-fluorophenyl)-chroman-7-ol in Example 81(d) using 0.5 g of 7-hydroxy-3-phenylchromen-4-one. 1H NMR (400 MHz, d6-DMSO) δ: 8.18 (br s, 1H), 7.31-7.34 (m, 4H), 7.25-7.27 (m, 1H), 6.88 (d, 1H, J 8.2 Hz), 6.30 (dd, 1H, J 8.2, 2.4 Hz), 6.20 (d, 1H, J 2.4 Hz), 4.21 (dd, 1H, J 10.3, 3.6 Hz), 4.00 (t, 1H, 10.3 Hz), 3.13 (m, 1H), 2.84-2.87 (m, 2H).

Provenance & Evidence