6-Hydroxyflavanone → 6-(5-Nitropyridin-2-yloxy)-2-phenylchroman-4-one

Participants

Reaction Steps

6-(5-Nitropyridin-2-yloxy)-2-phenylchroman-4-one was prepared as described for 5-Nitro-2-(2-phenylchroman-6-yloxy)pyridine in Example 1(b) using 200 mg of 6-hydroxyflavanone. 1H NMR (400 MHz, d6-DMSO) δ: 9.03 (bs, 1H), 8.64 (d, 1H, J 9.0 Hz), 7.59-7.41 (m, 7H), 7.31 (d, 1H, J 9.0 Hz), 7.23 (d, 1H, 8.8 Hz), 5.75 (dd, 1H, J 12.3, 2.9 Hz), 3.30 (dd, 1H, −16.3, 12.3 Hz), 2.87 (dd, 1H, −16.3, 2.9 Hz).

Provenance & Evidence