Oxidation of Oximes to Nitrile Oxides with Hypervalent Iodine Reagents
作者:Brian A. Mendelsohn、Shelley Lee、Simon Kim、Florian Teyssier、Virender S. Aulakh、Marco A. Ciufolini
DOI:10.1021/ol900194v
日期:2009.4.2
catalytic amount of TFA efficiently oxidizes aldoximes to nitrile oxides. The latter may be trapped in situ with olefins in a bimolecular or an intramolecular mode. The new method enables the execution of tandem oxidative dearomatization of phenols/intramolecular nitrile oxide cycloaddition sequences leading to useful synthetic intermediates.
Synthetic aspects of the oxidative amidation of phenols
作者:Huan Liang、Marco A. Ciufolini
DOI:10.1016/j.tet.2010.05.020
日期:2010.7
action of hypervalent iodine reagents. The reagent, (diacetoxyiodo)benzene (‘DIB’) is especially effective in these transformations. This paper focuses on techniques for the desymmetrization of the dienoes thus obtained, leading to the stereocontrolled creation of N-substituted spiro carbons. The methodology creates new opportunities in alkaloid synthesis, as apparent from a number of examples.