Reacción #59555

Ecuación de reacción

5-nitro-2-(2-phenylchroman-6-yloxy)pyridine

2-(4-chlorophenyl)chroman-4,6-diol

→

2-(4-Chlorophenyl)-6-(5-nitropyridin-2-yloxy)chroman-4-ol

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe product was purified by column chromatography

Procedimiento

2-(4-Chlorophenyl)-6-(5-nitropyridin-2-yloxy)chroman-4-ol was prepared as described for 5-nitro-2-(2-phenylchroman-6-yloxy)pyridine in Example 1(b) starting from 330 mg of 2-(4-chlorophenyl)chroman-4,6-diol. The product was purified by column chromatography using heptane-ethyl acetate (2:1) as an eluant. 1H NMR (300 MHz, d6-DMSO) δ: 9.04 (d, 1H, J 2.9 Hz), 8.61 (dd, 1H, J 9.1, 2.9 Hz), 7.54-7.47 (m, 4H), 7.25 (d, 1H, J 2.8 Hz), 7.22 (d, 1H, 9.1 Hz), 7.02 (dd, 1H, J 8.8, 2.8 Hz), 6.89 (d, 1H, J 8.8 Hz), 5.65 (d, 1H, J 6.4 Hz), 5.33 (d, 1H, J 10.6 Hz), 4.98 (m, 1H), 2.34 (m, 1H), 1.94 (m, 1H).

Fuente