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CH insertion: Borylnitrenes, which are generated in situ by photoylsis of azides, convert unactivated alkanes by intermolecular CH insertion into aminoboranes (see scheme), which in turn can be reacted further to give amines or amides. The boryl group serves two purposes: it converts the nitrene into a highly reactive BN vinylidene analogue, and it is easily cleaved from the product.
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Bettinger et al. (2008) studied this question.
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