alkyl and benzylamines. Other TDGs for amine functionalization include glyoxylic acid developed by Ge, 10 aryl keto-acids for d-arylation, and acetal-ethers. Given the value of sulfones in medicinal chemistry, 20 we envisaged that the direct C-H functionalization of amine precursors to form amino-sulfones would provide valuable building blocks. Specifically, we aimed to avoid using precious metals. Furthermore, a primary goal was to render the reaction catalytic both the transient directing group and the copper species.