ChemInform Abstract: Beyond Classical Reactivity Patterns: Hydroformylation of Vinyl and Allyl Arenes to Valuable β‐ and γ‐Aldehyde Intermediates Using Supramolecular Catalysis.

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Rhodium bisphosphine complexes catalyze the regioselective hydroformylation of 2‐ [e.g. (I)] and 3‐carboxy styrenes (XII) to the otherwise disfavored β‐aldehydes.