Metal-free photoredox-catalyzed reductive dimerization of allenes enabled by heterolytic cleavage of α-bromo esters: Access to functionalized 1,5-dienes

Partha Sarathi Bera; Yafia Kousin Mirza; Sayan Patra; Sanjana S. Talekar; Manoj V. Mane; Milan Bera

doi:10.1039/d6qo00223d

January 1, 2026Organic Chemistry Frontiers

Metal-free photoredox-catalyzed reductive dimerization of allenes enabled by heterolytic cleavage of α-bromo esters: Access to functionalized 1,5-dienes

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Key Points

The central aim is to achieve selective functionalization of allenes through a new catalytic process.
Utilized metal-free photoredox catalysis for reactions involving allenes and α-bromo esters.
Investigated regio- and stereoselectivity in the dimerization process.
Analyzed the reaction products to assess functionality of 1,5-dienes.
Successfully achieved reductive dimerization of allenes with high selectivity.
Demonstrated the heterolytic cleavage of α-bromo esters as a key mechanism.
Produced functionalized 1,5-dienes with potential applications in synthetic chemistry.

Implication

This research demonstrates a novel metal-free approach to functionalize allenes, suggesting improved selectivity for complex compounds.

Abstract

Selective functionalization of allenes is an actively researched area in synthetic chemistry yet faces challenges, including regio- and stereoselectivity. Herein, we report a metal-free photoredox catalyzed reductive dimerization of allenes...

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Cite This Study

Bera et al. (2026) studied this question.

synapsesocial.com/papers/69d9e55278050d08c1b7588d https://doi.org/10.1039/d6qo00223d

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Metal-free photoredox-catalyzed reductive dimerization of allenes enabled by heterolytic cleavage of α-bromo esters: Access to functionalized 1,5-dienes

Key Points

Implication

Abstract

Discussion

Cite This Study

Metal-free photoredox-catalyzed reductive dimerization of allenes enabled by heterolytic cleavage of α-bromo esters: Access to functionalized 1,5-dienes

Key Points

Implication

Abstract

Discussion

Cite This Study

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