Paper
o-Iodoxybenzoic acid (IBX) as a viable reagent in the manipulation of nitrogen- and sulfur-containing substrates: scope, generality, and mechanism of IBX-mediated amine oxidations and dithiane deprotections.
Published Apr 6, 2004 · K. Nicolaou, Casey J. N. Mathison, T. Montagnon
Journal of the American Chemical Society
248
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1
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Abstract
o-Iodoxybenzoic acid (IBX), a highly versatile hypervalent iodine(V) reagent, was found to efficiently mediate the dehydrogenation of amines in addition to facilitating the oxidative cleavage of dithioacetals and dithioketals. Through the development of relevant IBX-based protocols, a plethora of useful synthetic intermediates, including imines, oximes, ketones, and aromatic N-heterocycles, were found to be readily accessible under notably mild conditions. Further investigation of these transformations led to the elucidation of valuable mechanistic details, resulting in the conclusion that they proceed via ionic rather than single electron transfer (SET) pathways.
o-Iodoxybenzoic acid (IBX) efficiently mediates amine dehydrogenation and oxidative cleavage, enabling the facile access to useful synthetic intermediates under mild conditions.
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