Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 10, Issue 1, Pages 124-128Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201402990
Keywords
cycloaddition; diazoamides; iridium; photocatalysis; visible light
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An unprecedented phototandem catalysis based on a single iridium photocatalyst has been successfully developed. This powerful strategy consists of two mechanistically distinct catalytic cycles, namely, photocatalytic energy transfer (ET) and single electron transfer (SET). The novel protocol allows a rapid and efficient construction of biologically and synthetically important 3-ester-3-hydroxy-2-oxindole derivatives from readily available diazoamides through a cyclization/aerobic oxidation sequence under very mild conditions.
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