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 active methylene compound. Although both transformations occur essentially under the same reaction conditions, control experiments
在氧化还原中性反应条件下,铜催化的O-乙酰肟和 β-酮酯/腈之间的反应分别生成多取代的吡咯和呋喃。使用该协议,只需选择适当的活性亚甲基化合物即可获得吡咯或呋喃。尽管这两种转化基本上发生在相同的反应条件下,但对照实验表明它们遵循不同的机制途径。