H to N: The first example of a mild, highly efficient CH bond amidation catalyzed by ruthenium(II) porphyrin complexes uses PhINTs as the nitrogen source for installing the amide bond functionality in a wide variety of aldehydes (see scheme). The protocol is chemoselective, with the new CN bond forming only at the acyl CH bond, even in aldehyde substrates containing other functional groups.
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Chang et al. (2007) studied this question.
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