An efficient copper-catalytic system for performing intramolecular O-arylation reactions in aqueous media. New synthesis of xanthones
作者:Nekane Barbero、Raul SanMartin、Esther Domínguez
DOI:10.1039/b900931k
日期:——
A safe, efficient protocol for the copper-catalysed intramolecular O-arylation of 2-halobenzophenones on water to afford the valuable xanthone framework is reported. The recovery and the successful reutilization of the aqueous solution containing the copper catalyst are also presented. Moreover, the scalability and the easy setup and purification tasks of this sustainable method make it appealing for bulk industry applications.
A convenient approach to the xanthone scaffold by an aqueous aromatic substitution of bromo- and iodoarenes
作者:Nekane Barbero、Raul SanMartin、Esther Domínguez
DOI:10.1016/j.tet.2009.05.021
日期:2009.7
Unusual displacements of bromides and iodides through nucleophilic aromatic substitution reactions give a direct access to the xanthone core. This sustainable process is based on the use of water as an environmentally friendly solvent. (C) 2009 Elsevier Ltd. All rights reserved.