摘要:
It has been found that selective N-alkylation of 4-alkoxy-2-pyridones can be achieved under anhydrous, mild conditions with tetrabutylammonium iodide and potassium tert-butoxide being employed as the catalyst and the base, respectively. The procedure was applied to the preparation of 4-methoxy-l-methyl-2-pyridone, a valuable building block for heterocycle synthesis. (c) 2005 Elsevier Ltd. All rights reserved.