反应详情

A stirred solution of pyridine-2-carbohydroximoyl chloride (300 mg, 1.9 mmol) and 3-hydroxyphenylacetylene (760 mg, 6.4 mmol) in a 1:1 mixture of THF/CH2Cl2 (10 mL) at 0° C. was treated with triethylamine (2 mL, 1.45 g, 15 mmol). The mixture was allowed to warm to room temperature overnight. The solvent was removed in vacuo. The residue was dissolved in dichloromethane, washed with brine and dried over anhydrous sodium sulphate. Removal of the solvent in vacuo followed by trituation with 10% ethylacetate in hexane afforded 200 mg (44%) of 5-[3-hydroxyphenyl]-3-[pyridin-2-yl]-1,2-oxazole as a beige solid.

1. customThe solvent was removed in vacuo
2. dissolutionThe residue was dissolved in dichloromethane
3. washwashed with brine
4. dry with materialdried over anhydrous sodium sulphate
5. customRemoval of the solvent in vacuo