Access to Axially Chiral Diaryl Ethers via Catalytic Atroposelective [2+2+2] Cycloaddition of Alkynyloxybenzenes.
Despite the growing importance of axially chiral diaryl ethers, efficient catalytic asymmetric methods for their synthesis remain rare, and existing approaches are largely limited to desymmetrization. Here, we report a direct and atroposelective annulation strategy to address this challenge. Using a rhodium catalyst, t...