Abstract
Abstract A palladium-catalyzed annulation reaction between salicylic acid derivatives and propargylic carbonates via the cleavage of a propargylic carbon–oxygen bond is described. This rare annulation reaction uses propargylic compounds as the C1 component for heterocyclic products and can be applied to the preparation of unique five- or six-membered cyclic compounds. The corresponding products contain a fully substituted allylic carbon and the reaction is characterized by high functional-group tolerance.
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