Visible‐Light‐Mediated Remote Aliphatic C−H Functionalizations through a 1,5‐Hydrogen Transfer Cascade

Abstract

A redox-neutral, light-mediated functionalization of unactivated C(sp³ )-H bonds via iminyl radicals is presented here. A 1,5-H transfer followed by the functionalization of a C(sp² )-H bond takes place in aqueous media producing a variety of elaborated fused ketones. Mechanistic investigations have revealed 1,5-H transfer as the reversible, rate-determining step in this transformation. Divergent scaffolds are also accessible via C(sp³ )-N bond formation upon a careful choice of the reaction additives.