Visible Light-Induced Three-Component Alkoxyalkylation of Alkenes with α-Halocarbonyls and Alcohols.

A visible-light-induced three-component alkoxyalkylation of alkenes has been developed under the photocatalysis of -Ir(ppy). The alkene substrate scope included aryl and aliphatic alkenes as well as electron-rich and electron-deficient alkenes, allowing the facile coupling with a diverse array of α-halocarbonyl compounds. The redox potential-guided orchestration of radical processes with precision allows rapid access to highly functionalized products that are useful building blocks in organic synthesis.