Synthesis of Azetidines via Visible Light-Mediated Intermolecular [2+2] Photocycloaddition

Abstract

Intermolecular [2+2] photocycloadditions represent a powerful method for the synthesis of highly strained, four-membered rings. While this approach is commonly employed for the synthesis of oxetanes and cyclobutanes, the synthesis of azetidines via intermolecular aza Paternò-Büchi reactions remains highly