Selenium-Catalyzed Regioselective Cyclization of Unsaturated Carboxylic Acids Using Hypervalent Iodine Oxidants
作者:Fateh V. Singh、Thomas Wirth
DOI:10.1021/ol202800k
日期:2011.12.16
A new and convenient selenium-catalyzed regioselective cyclization of γ,δ-unsaturated carboxylicacids to the corresponding 3,6-dihydro-2H-pyran-2-ones is described. The cyclization products have been obtained in good to excellent yields using diphenyl diselenide as a catalyst and [bis(trifluoroacetoxy)iodo]benzene as a stoichiometric oxidant.