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Rhodium(iii)-catalyzed alkylation of primary C(sp(3))-H bonds with α-diazocarbonyl compounds.

Rh(iii)-catalyzed intermolecular chelation-assisted insertion of carbenes derived from α-diazocarbonyl compounds into non-acidic primary sp(3) C-H bonds, for the first time, is reported under mild reaction conditions, thus affording a good complement to previous metal-carbenoid-induced primary C(sp(3))-H insertion reactions. We believe that this method will open up a new avenue for primary sp(3) C-H functionalization with α-diazocarbonyl compounds.