This review summarizes recent developments in multicomponent reactions of diazo compounds. The role of diazo reagent and the type of interaction between components was analyzed to structure the discussion. In contrast to previous reviews on related topics mostly focused on metal catalyzed transformations, a substantial amount of organocatalytic or catalyst-free methodologies is covered in this work.
Keywords: asymmetric; cycloaddition; denitrogenation; diazo compounds; heterocycles; metal catalysis; multicomponent; quaternary carbon; stereoselectivity.