Valorisation of phenols to coumarins through one-pot palladium-catalysed double C–H functionalizations
作者:Giulia Brufani、Federica Valentini、Flavio Sabatelli、Benedetta Di Erasmo、Anastasiia M. Afanasenko、Chao-Jun Li、Luigi Vaccaro
DOI:10.1039/d2gc03579k
日期:——
chemical production. Among the transformation of phenols, C–H functionalization is limited to a few examples with homogeneous metal-based catalysts. Herein, a robust one-pot approach for constructing C8 alkyl substituted coumarins starting from simple phenols through the palladium-catalysed double C–H functionalizations is presented. In such a combined protocol, a Pd/C was used as a heterogeneous catalyst
酚类通过步骤和原子效率协议对于向可持续化学品生产的过渡非常重要。在酚类的转化中,C-H 官能化仅限于使用均相金属基催化剂的少数例子。本文提出了一种稳健的一锅法,用于从简单的酚类开始通过钯催化的双 C-H 官能化构建 C8 烷基取代的香豆素。在这样的组合方案中,Pd/C 首次用作非均相催化剂。所开发的方法能够使用潜在的生物质衍生酚以良好的分离产量合成结构多样的香豆素,包括天然产物。