Select your group: Either a primary or tertiary alkyl group can be selectively introduced onto the nitrogen atom of tosylamides in a ruthenium-catalyzed reaction employing hydrosilanes through a judicious choice in the esters that serve as the alkyl source (see scheme; Ts= 4-toluenesulfonyl). These N-alkylation reactions are useful for construction of naturally occurring azacyclic skeletons.
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