Ethyl Acetate → Methyl 6-(4-hydroxyphenyl)-2-pyridinecarboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 6-bromo-2-pyridinecarboxylate (1.35 g, 6.22 mmol, 1 eq), (4-hydroxyphenyl)boronic acid (0.945 g, 6.85 mmol, 1.1 eq), Pd(PPh3)4 (0.718 g, 0.06 mmoles, 0.01 eq) and K2CO3 (1.7 g, 12.4 mmoles, 2 eq) in dioxane (15 mL) and water (8 mL) was heated at 100° C. for 2 h. Then AcOEt was added and the organic phase was washed with water, dried over Na2SO4, filtered and evaporated to dryness. The crude compound was purified on flash chromatography on 50 g silica gel cartridge using a gradient of cyclohexane/ethyl acetate 10/0 to 7/3 as an eluent. Solvents were removed under reduced pressure to give the title compound as a yellow solid (650 mg, 46%). 1H-NMR (CDCl3, 400 MHz): δ 4.03 (3H, s), 5.28 (1H, s), 6.90-7.03 (2H, m), 7.80-7.98 (2H, m), 8.0-8.06 (3H, m). MS: (ES/+) m/z: 230 (M+H)+. C13H11NO3 requires 229.

Provenance & Evidence