Asymmetric [4 2] Annulation of C1 Ammonium Enolates with Copper‐Allenylidenes

Angewchem
Asymmetric [4 2] Annulation of C1 Ammonium Enolates with Copper‐Allenylidenes: An asymmetric catalytic decarboxylative [4+2] annulation of 4‐ethynyl dihydrobenzooxazinones and carboxylic acids has been established by cooperative copper and nucleophilic Lewis base catalysis. A C1...

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