August 13, 2025

Tetralone Formation through Visible-Light-Driven Photocyclization of Aryl Sulfoxonium Ylides with Unactivated Alkenes.

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Main finding: The study reveals a new method for synthesizing γ-substituted tetralones via visible-light-driven cycloaddition.
Key evidence: This reaction shows a broad functional group tolerance, and high selectivity under mild, metal-free conditions.
Approach: The method involves photoredox [4+2] cycloaddition of sulfoxonium ylides with unactivated alkenes.
Significance: The process may enable the efficient assembly of valuable chemical scaffolds in synthetic chemistry.

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Photoredox cycloaddition generates γ-substituted tetralones using sulfoxonium ylides and alkenes, suggesting broad functional group tolerance.

Xian et al. (2025) studied this question.

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Photoredox cycloaddition generates γ-substituted tetralones using sulfoxonium ylides and alkenes, suggesting broad functional group tolerance.