Photocatalyzed Selective Hydrocarbonation of Alkenes with Hantzsch Esters toward 4-Alkyl-Hantzsch Esters.

Here, we describe a mild photoredox-neutral reaction system that enables the selective hydrocarbonation of alkenes with Hantzsch esters, affording structurally diverse 4-alkyl-Hantzsch esters. This straightforward protocol can be performed under an air atmosphere without the need for any transition metals. The synthetic potential of this method is well exemplified by the late-stage structural modification of a series of pharmaceutically relevant complex molecules.