Potassium Carbonate → 3-[4-(5-Fluoro-2-methyl-phenoxymethyl)-phenyl]-isoxazole-5-carboxylic acid amide

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Reaction Conditions

Reaction Steps

To a mixture of 3-(4-bromomethyl-phenyl)-isoxazole-5-carboxylic acid amide (which may be prepared as described in Preparation of Intermediate 14; 30 mg, 0.107 mmol) in CH3CN (2 mL) were added 5-fluoro-2-methylphenol (20 μL. 0.18 mmoL) and K2CO3 (30 mg, 0.22 mmol). The mixture was heated at 90° C. for 16 h and then evaporated to dryness. The residue was purified by chromatography (66-75% EtOAc/hexanes) to give 3-[4-(5-fluoro-2-methyl-phenoxymethyl)-phenyl]-isoxazole-5-carboxylic acid amide (24 mg, 69%) as a white powder. 1H NMR (300 MHz, DMSO-d6) δ ppm 8.38 (br. s., 1H), 8.01 (br. s., 1H), 7.93 (d, J=8.2 Hz, 2H), 7.52-7.65 (m, 3H), 7.16 (t, J=7.5 Hz, 1H), 6.92 (dd, J=11.3, 2.6 Hz, 1H), 6.67 (td, J=8.5, 2.7 Hz, 1H), 5.20 (s, 2H), 2.16 (s, 3H).

Provenance & Evidence