2-Phenyl-2,3-dihydrobenzo[1,4]oxathiin-6-ol → 5-Nitro-2-(2-phenyl-2,3-dihydrobenzo[1,4]oxathiin-6-yloxy)pyridine

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Reaction Steps

5-Nitro-2-(2-phenyl-2,3-dihydrobenzo[1,4]oxathiin-6-yloxy)pyridine was prepared as described for 5-nitro-2-(2-phenylchroman-6-yloxy)pyridine in Example 1(b) using 269 mg 2-phenyl-2,3-dihydrobenzo[1,4]oxathiin-6-ol. The product was recrystallised from ethanol. 1H NMR (400 MHz, CDCl3) δ: 9.07 (d, 1H, J 2.8 Hz), 8.47 (dd, 1H, J 9.1, 2.8 Hz), 7.43 (m, 4H), 7.37-7.41 (m, 1H), 7.02 (d, 1H, J 9.1 Hz), 6.99 (d, 1H, J 8.9 Hz), 6.95 (d, 1H, J 2.8 Hz), 6.82 (dd, 1H, J 8.9, 2.8 Hz), 5.21 (dd, 1H, J 9.7, 1.9 Hz), 3.31 (dd, 1H, 13.2, 9.7 Hz), 3.11 (dd, 1H, 13.2, 1.9 Hz).

Provenance & Evidence