Ruthenium-Catalyzed C−H Arylation of Benzoic Acids and Indole Carboxylic Acids with Aryl Halides
作者:Marco Simonetti、Diego M. Cannas、Adyasha Panigrahi、Szymon Kujawa、Michal Kryjewski、Pan Xie、Igor Larrosa
DOI:10.1002/chem.201605068
日期:2017.1.12
Ru-catalyzed C-H arylation of benzoic acids with readily available aryl (pseudo)halides. The reaction, which does not require the use of silver salt additives, allows the arylation of previously challenging hindered benzoic acids and the use of generally unreactive ortho-substituted halorarenes. Furthermore, our new protocol can efficiently be applied to indole carboxylic acids, thus allowing access to C7-
在此,我们报道了首次 Ru 催化的苯甲酸与容易获得的芳基(拟)卤化物的 CH 芳基化反应。该反应不需要使用银盐添加剂,可以对以前具有挑战性的受阻苯甲酸进行芳基化,并使用通常不反应的邻位取代的卤代芳烃。此外,我们的新方案可以有效地应用于吲哚羧酸,从而允许获得C7-、C6-、C5-和C4-芳基化吲哚化合物,这与吲哚C2和C3位置的经典增强反应性不同。