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DOI: 10.1055/a-2748-2341
Light-Driven Reactivity of Alkynes with Carbenes Derived from Diazo Compounds
Authors
We thank CSIR-HRDG-EMR-II (Project No.02/0478/23/EMR-II) for financial support. P.Y. thanks MoE for her PMRF fellowship, and A.P. sincerely thanks CSIR for his fellowship.

Abstract
Here, we comprehensively summarize the reactivity of alkynes with carbenes derived from diazo compounds and related precursors in the presence of visible light. The alkynes’ rich reactivity is demonstrated through various reactions, including cyclopropenation, C–H insertion, annulation, synthesis of heterocyclic compounds via cycloaddition, and synthesis of bistrifluoromethylated trienes and tetrasubstituted allenes. These reactions are discussed along with their mechanisms, which occur under visible light with/without photo-redox catalysts or additives.
Publication History
Received: 30 September 2025
Accepted after revision: 14 November 2025
Accepted Manuscript online:
14 November 2025
Article published online:
09 December 2025
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