By design: The site-selective oxidation of unactivated secondary CH bonds was accomplished with hypervalent iodine(III) reagents and tert-butyl hydroperoxide (see scheme). The preparation and derivatization of the hypervalent iodine(III) reagent are simple, thus allowing the rational design of these reagents to optimize the site selectivity of the oxidation.
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Moteki et al. (2013) studied this question.
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