Ruthenium(II)‐Catalyzed C−H Activation of Imidamides and Divergent Couplings with Diazo Compounds: Substrate‐Controlled Synthesis of Indoles and 3
<i>H</i>
‐Indoles
作者:Yunyun Li、Zisong Qi、He Wang、Xifa Yang、Xingwei Li
DOI:10.1002/anie.201606316
日期:2016.9.19
Indoles are an important structural motif that is commonly found in biologically active molecules. In this work, conditions for divergent couplings between imidamides and acceptor–acceptor diazo compounds were developed that afforded NH indoles and 3H‐indoles under ruthenium catalysis. The coupling of α‐diazoketoesters afforded NH indoles by cleavage of the C(N2)−C(acyl) bond whereas α‐diazomalonates
吲哚是生物活性分子中常见的重要结构基序。在这项工作中,开发了酰亚胺酰胺和受体-受体重氮化合物之间发散偶联的条件,该条件可在钌催化下提供NH吲哚和3 H-吲哚。α-二氮杂酮酸酯的偶联通过裂解C(N 2)-C(酰基)键提供了NH吲哚,而α-二氮杂丙二酸酯通过C-N键的裂解产生了3个H-吲哚。该反应通过钌催化的CH活化作用构成重氮底物与芳烃的第一个分子间偶联。