Visible Light‐Driven Multicomponent Reactions for the Synthesis of Diverse Heterocyclic Frameworks

The characteristics of visible light, including its sustainability, eco‐friendliness, and potential for renewable energy, have made visible light‐powered catalysis an intriguing research topic of great interest. In this case, photoredox catalysis uses a single‐electron transfer mechanism under mild reaction conditions to produce very reactive radical species with frequently unusual reactivities. This work is the most comprehensive review of photochemical methods for producing divergent heterocycles through multicomponent reactions, covering important developments since 2021. This review is structured according to the kind of synthesized heterocyclic scaffold. Additionally, different study findings’ scopes, limitations, and mechanistic studies are covered.