7-Hydroxyflavanone → 7-(5-Nitropyridin-2-yloxy)-2-phenylchroman-4-one

Participants

Reaction Steps

7-(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 150 mg of 7-hydroxyflavanone. 1H NMR (400 MHz, d6-DMSO) δ: 9.07 (d, 1H, J 2.8 Hz), 8.67 (dd, 1H, J 9.0, 2.8 Hz), 7.89 (d, 1H, 8.6 Hz), 7.60-7.35 (m, 6H), 7.04 (d, 1H, 2.1 Hz), 6.97 (dd, 1 H, 8.6, 2.1 HZ), 5.75 (dd, 1H, J 13.0, 2.7 Hz), 3.32 (dd, 1H, 16.9, 13.0 Hz), 2.85 (d, −16.9, 2.7 Hz).

Provenance & Evidence