A two step route to indoles from haloarenes—a versatile variation on the Fischer indole synthesis
作者:Martyn Inman、Christopher J. Moody
DOI:10.1039/c0cc04306k
日期:——
In a new variation on the Fischer indole synthesis, readily available haloarenes are converted into a wide range of indoles in just two steps by halogen-magnesium exchange, quenching with di-tert-butyl azodicarboxylate, followed by reaction with ketones under acidic conditions.
FeCl3 catalyzed intermolecular reaction between enol ethers and anilines: Access to 2,3-substituted indoles through aryl group migration
作者:Tapan Kumar Jena、Faiz Ahmed Khan
DOI:10.1016/j.tetlet.2020.152583
日期:2020.12
An intermolecular FeCl3 catalyzed reaction between anilines and enol ethers is described. A variety of enol ethers and aromatic amines undergo a CC bond formation followed by cyclization via CN bond formation to afford the 2,3-disubstituted indoles, involving an unexpected aryl group migration. In this methodology, anilines act as bis-nucleophiles, wherein the initial attack occurs at the α-position