Tetrahedron letters

A practical procedure for the selective N-alkylation of 4-alkoxy-2-pyridones and its use in a sulfone-mediated synthesis of N-methyl-4-methoxy-2-pyridone

D Conreaux, E Bossharth, N Monteiro, P Desbordes…

文献索引：Conreaux, David; Bossharth, Emmanuel; Monteiro, Nuno; Desbordes, Philippe; Balme, Genevieve Tetrahedron Letters, 2005 , vol. 46, # 46 p. 7917 - 7920

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被引用次数: 30

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-1-methyl-2-pyridone, a valuable building block for heterocycle synthesis.