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
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.
Preparation of 3-Methoxy-2-benzenesulfonylpropenenitriles
作者:Miguel A. Pérez、José L. Soto、Francisco Guzmán、Angel Diaz、Herminia Alcalá
DOI:10.1055/s-1984-31073
日期:——
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
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.