Oxidative rearrangement of indoles to access oxindoles has been used as a key step in complex molecule synthesis. We report a catalytic enantioselective variant of this transformation by chiral phosphoric acid catalysis, providing rapid access to a range of enantioenriched spirooxindoles. The high enantioselectivity is controlled by dynamic kinetic resolution.
Propargylic alcohols have been known as useful substrates in a wide range of asymmetric reactions. Particularly, the chiral phosphoric acids (CPAs) catalyzed reactions of functionalized propargylic alcohols opened a robust...
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