Stereoselective Radical Azidooxygenation of Alkenes
Bo Zhang and Armido Studer*
*Institute of Organic Chemistry, Westfälische Wilhems-University, Corrensstrasse 40, 48149, Münster, Germany, Email: studeruni-muenster.de
B. Zhang, A. Studer, Org. Lett., 2013, 15, 4548-4551.
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A readily prepared N3-iodine(III) reagent acts as a clean N3-radical precursor in a radical azidooxygenation of various alkenes in the presence of TEMPONa as a mild organic reducing reagent. The C-radical generated after N3-radical addition is efficiently trapped by in situ generated TEMPO. Yields are very good, and for cyclic systems azidooxygenation occurs with excellent diastereoselectivity.
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