A novel ethyl 5-cyano-6-hydroxy-2-methyl-4-(1-naphthyl)-nicotinate is successfully synthesized and the structure is determined by XRD, GC-MS analysis, element analysis and NMR spectroscopic in detail. A reaction mechanism for the reaction is proposed. (C) 2008 Published by Elsevier Ltd.
Construction of 2-pyridones <i>via</i> oxidative cyclization of enamides: access to Pechmann dye derivatives
作者:Sivanna Chithanna、Ding-Yah Yang
DOI:10.1039/d0ob02376k
日期:——
dehydrogenation. The cyclization of enamides was achieved by the introduction of an electron-withdrawing group on the α-carbon of acid chlorides. This methodology allows quick access to polycyclic Pechmanndyes via rare double oxidative cyclizations of dienamides under mild conditions.