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Decarboxylative Alkynylation of Biomass-Derived Compounds by Metal-Free Visible Light Photocatalysis

Schwarz, Johanna ; König, Burkhard


We report a mild method for the decarboxylative C-C bond formation between natural carboxylic acids and alkynes. Activation of a very broad scope of carboxylic acids derived from renewable resources is achieved by esterification to N (acyloxy)phthalimides. The cross coupling with acetylenic sulfones proceeds under irradiation with green light (528 nm) in the presence of the organic photocatalyst ...


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