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An efficient Rh(III)-catalyzed direct C-H amination of N-pivaloyloxy benzamides with N-chloroamines proceeding at room temperature was achieved. The versatile directing group allows for selective mono- and diamination and can be readily converted to give valuable benzamide or aminoaniline derivatives. Mechanistic studies have been carried out to elucidate the reaction pathway.
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Grohmann et al. (2011) studied this question.
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