What does this research mean for the field?

Bismuth-catalyzed photoinduced hydrodecarbonylation of aliphatic aldehydes is achieved using visible light, with water as the hydrogen source. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The primary aim is to explore a new bismuth-catalyzed method for hydrodecarbonylation of aldehydes using visible light.

February 27, 2026

Bismuth-Catalyzed Photoinduced Ligand-to-Metal Charge Transfer (LMCT) Hydrodecarbonylation of Aldehydes

Key Points

The primary aim is to explore a new bismuth-catalyzed method for hydrodecarbonylation of aldehydes using visible light.
Utilized visible light for catalysis with bismuth
Conducted mechanistic studies focusing on ligand-to-metal charge transfer
Performed deuterium-labeling experiments to identify hydrogen sources
Assessed functional-group tolerance of various substrates
Chlorine radicals formed via ligand-to-metal charge transfer are crucial to the mechanism
The reaction displays excellent tolerance for complex, drug-like functional groups
Water was confirmed as the primary hydrogen source in the reaction

Abstract

Herein, we disclose a visible-light, bismuth-catalyzed strategy for the hydrodecarbonylation of aliphatic aldehydes. Mechanistic studies highlight chlorine radical formation via Ligand-to-Metal Charge Transfer (LMCT) from in situ generated BiIIICl52-. After C(sp2)-H abstraction by the chlorine radical, decarbonylation followed by Hydrogen Atom Transfer (HAT) furnishes the desired products. Deuterium-labeling studies confirm that water serves as the hydrogen source. The reaction demonstrates excellent functional-group tolerance, including substrates bearing complex, drug-like motifs.

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Bismuth-Catalyzed Photoinduced Ligand-to-Metal Charge Transfer (LMCT) Hydrodecarbonylation of Aldehydes

Key Points

Abstract

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