Furan as a 1,3-diketone equivalent: the second type furan recyclization applied to indole synthesis
摘要:
A new approach for the synthesis of indole derivatives based on protolytic recyclization of 2-alkyl-5-(2-tosylaminoaryl)-furans is described. The furan ring in this unusual transformation formally serves as a 1,3-diketone equivalent. (c) 2006 Elsevier Ltd. All rights reserved.
Oxidative Transformation of 2-Furylanilines into Indolin-3-ones
作者:Ekaterina R. Nasibullina、Elena Y. Mendogralo、Anton A. Merkushev、Anton S. Makarov、Maxim G. Uchuskin
DOI:10.1021/acs.joc.4c00359
日期:2024.5.3
Oxidation of 2-furylaninlies with m-CPBA followed by treatment with a base provides access to functionalized indolin-3-ones. The designed oxidativetransformation utilizes an underassessed chemical behavior of furyl-containing amines to form a C–N bond via engaging a β-carbon atom of the furan core upon a ring-forming step, thereby providing an alternative disconnection toward nitrogen-containing heterocycles