Visible Light‐Induced Imide Alkylation of Azauracils with Aryl Diazoesters

Abstract

A visible light‐induced green and sustainable N−H functionalization of (aza)uracils with α‐diazo esters leading to imide alkylation is described. The reaction does not require any catalyst or additive and proceeds under mild conditions. Moreover, an intriguing three component coupling was observed when (aza)uracils were allowed to react with α‐diazo esters in cyclic ethers (e. g. 1,4‐dioxane, THF) as a solvent. Both the insertion and three‐component coupling features broad scope with good to excellent yields and appreciable functional group tolerance. Notably, the divergent method enables modification of natural products and pharmaceuticals, thereby facilitates access to potentially biologically active compounds.