Cp*Co(<scp>iii</scp>)-catalyzed C–H amination/annulation cascade of sulfoxonium ylides with anthranils for the synthesis of indoloindolones
作者:Yogesh N. Aher、Amit B. Pawar
DOI:10.1039/d1cc02817k
日期:——
Cp*Co(III)-catalyzed [4+1] annulation of sulfoxonium ylides with anthranils has been developed for the synthesis of indole–indolone scaffolds. The dual functionality of anthranils was exploited, wherein the nitrogen has been used for C–H amination and the aldehyde group was utilized in the subsequent intramolecular aldol condensation to furnish the corresponding annulated products.
Cp*Co( III )-催化的锍叶立德与邻氨基苯甲酸的[4+1]环化已被开发用于合成吲哚-吲哚酮支架。利用了邻氨基苯甲酸的双重功能,其中氮用于 C-H 胺化,醛基用于随后的分子内醇醛缩合以提供相应的环状产物。
Palladium-catalyzed intramolecular C H acylation of indoles with thioester
作者:Min Liu、Yu-Wen Liu、Hui Xu、Hui-Xiong Dai
DOI:10.1016/j.tetlet.2019.151061
日期:2019.9
A palladium-catalyzedintramolecular CH acylation of indole with thioester is described, providing a direct and effective approach for the synthesis of the biologically active indole-indolone scaffolds. The method obviates the need for the prefunctionalized starting materials including organometallic reagents, alkyl halides, and NHP esters in previous metal-catalyzed cross-coupling reaction with thioester
A direct annulation reaction of N‐(2‐formylaryl)indoles has been developed, which can provide a new entry to biologically and medicinally important indole‐indolone scaffolds via a silver‐catalyzed direct oxidative coupling between aldehydeCH and sp2CH bonds for the first time. Remarkably, this strategy displayed excellent functional group compatibilities, thereby suggesting its wide potential for
Synthesis of Polycyclic Indolone and Pyrroloindolone Heterocycles via the Annulation of Indole- and Pyrrole-2-Carboxylate Esters with Arynes
作者:Yeeman Ramtohul、Robert Giacometti
DOI:10.1055/s-0029-1217535
日期:2009.7
A mild and general method for the synthesis of a variety of polycyclic indolone and pyrroloindolone heterocycles via the reaction of indole- and pyrrole-2-carboxylate esters with arynes has been developed.
Rapid synthesis of the indole-indolone scaffold via [3+2] annulation of arynes by methyl indole-2-carboxylates
作者:Donald C. Rogness、Richard C. Larock
DOI:10.1016/j.tetlet.2009.04.047
日期:2009.7
The reaction of methyl indole-2-carboxylates and arynes affords a very efficient, high yielding synthesis of a novel indole-indolone ring system, which tolerates considerable functionality, is broad in scope, and proceeds under mild reaction conditions.