Synthesis of 6-substituted-3-hydroxy-4(1H)-pyridinones: Oxidation-Michael addition of 3-hydroxy-4(1H)-pyridinones
作者:Miao-Sheng Li、Lian-Quan Gu、Zhi-Shu Huang、Shao-Hua Xiao、Lin Ma
DOI:10.1016/s0040-4020(99)00008-3
日期:1999.2
2-Alkyl-3-hydroxy-4(1H)-pyridinones can be oxidized by silver(I) oxide in alcoholic solution to give 2-alkoxy-2-alkyl-1,2dihydro-pyridine-3,4-diones, which can subsequently undergo a Michael addition with nucleophiles to give 6-substituted-2-alkyl-3-hydroxy-4(1H)-pyridinones.