Divergent copper-catalyzed syntheses of 3-carboxylpyrroles and 3-cyanofurans from <i>O</i>-acetyl oximes and β-ketoesters/nitriles
作者:Wilfrido E. Almaraz-Ortiz、Aldahir Ramos Orea、Oscar Casadiego-Díaz、Agustín Reyes-Salgado、Arturo Mejía-Galindo、Rubén O. Torres-Ochoa
DOI:10.1039/d2ra04938d
日期:——
The reaction between O-acetyl oximes and β-ketoesters/nitriles catalyzed by copper generated polysubstituted pyrroles and furans, respectively, under redox–neutral reaction conditions. Using this protocol, pyrroles or furans could be obtained simply by choosing an appropriate activemethylene compound. Although both transformations occur essentially under the same reaction conditions, control experiments