Abstract
Visible light-driven proton transfer is crucial in nature and catalysis. Here, we report that protic merocyanine-based photoswitches act as efficient and recyclable homogeneous Brønsted acid catalysts under blue or green light irradiation. Photo-promoted proton release efficiently enables Friedel–Crafts reactions with easy catalyst recovery and reuse. Furthermore, by leveraging the high ...
Abstract
Visible light-driven proton transfer is crucial in nature and catalysis. Here, we report that protic merocyanine-based photoswitches act as efficient and recyclable homogeneous Brønsted acid catalysts under blue or green light irradiation. Photo-promoted proton release efficiently enables Friedel–Crafts reactions with easy catalyst recovery and reuse. Furthermore, by leveraging the high two-photon absorption cross-section of merocyanines, we successfully promote the reaction using near-IR light (λ ∼ 975 nm).
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