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We report a general and scalable method for the synthesis of all-meta-trisubstituted benzenes from readily available 3,5-disubstituted catechols. Oxidation and [4 + 2] cycloaddition with acetylene dienophiles generate a bicyclo[2.2.2]octane… Click to show full abstract
We report a general and scalable method for the synthesis of all-meta-trisubstituted benzenes from readily available 3,5-disubstituted catechols. Oxidation and [4 + 2] cycloaddition with acetylene dienophiles generate a bicyclo[2.2.2]octane structure that is doubly decarbonylated initiated by blue-light irradiation, leading to a meta,meta-disubstitution pattern on the re-aromatized system. This enables this substitution pattern even with very bulky alkyl groups (deemed excellent dispersion energy donors) to be incorporated into, for example, chiral phosphoric acid catalysts.
Journal Title: Organic letters
Year Published: 2022
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