Abstract
The first example of a ruthenium-catalyzed C-H bond alkylation via six-membered ruthenacycles is presented. This is disclosed for the C-H bond alkylation of biologically relevant cyclic amides with maleimide derivatives. The cyclic tertiary amide core acted as a directing group (DG) enabling formation of six-membered cycloruthenated species responsible for the control of the regio- and site selectivity of the reaction as well as the excellent functional group tolerance. Unexpectedly, cyclic amides were found to be better DGs than pyridine-containing ones or cyclic imides for this type of C-H bond functionalization.
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