Water → HCID 57458730, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of [5-(5-bromo-thiophen-2-yl)-1-(2-chloro-phenyl)-1H-pyrazol-3-yloxy]-acetic acid methyl ester (1.43 g, 3.33 mmol) in anhydrous THF (13.0 mL) was added sequentially 3-methylsulfonylphenylboronic acid (0.80 g, 4.0 mmol), Pd(PPh3)4 (192 mg, 0.17 mmol), Na2CO3 (1.06 g, 10.0 mmol) and water (1.0 mL). The reaction mixture was heated to reflux at 70° C. for overnight. The solvent was evaporated and the crude residue was purified by flash column chromatography with 50% ethyl acetate in hexane, resulting the product methyl {1-(2-chloro-phenyl)-5-[5-(3-methanesulfonyl-phenyl)-thiophen-2-yl]-1H-pyrazol-3-yloxy}acetate (0.746 g, 45% yield). 1H-NMR (CDCl3): δ 8.17 (m, 1H), 7.83 (m, 2H), 7.55 (m, 3H), 7.40 (m, 3H), 7.33 (m, 1H), 5.91 (s, 1H), 4.70 (s, 2H), 3.81 (s, 3H), 3.09 (s, 3H). MS (ES): 503 [M+H]+.

Provenance & Evidence