Abstract
A three-component cascade reaction is described that provides concise access to 6H-benzo[c]chromenes via Rh(iii)-catalyzed annulation of aryl ketone O-acyloximes, quinones and acetone. Acetone acts as a co-solvent and as a reactant. This reaction shows high efficiency, atom- and step-economy, good substrate scope, excellent functional group compatibility and gives the products in good yields.
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