Palladium-Catalyzed Hydroalkoxycarbonylation and Hydroxycarbonylation of Cyclopent-3-en-1-ols: Divergent Synthesis of Bridged Cyclic Lactones and β,γ-Unsaturated Carboxylic Acids

Herein, we report a palladium-catalyzed hydroalkoxycarbonylation and hydroxycarbonylation of cyclopent-3-en-1-ols to form bridged bicyclic lactones and beta,gamma-unsaturated carboxylic acid. The divergent reactivity of cyclopent-3-en-1-ols is mainly tuned by the palladium catalyst and ligands. The reaction occurs additive-free and has a broad substrate scope. Several valuable synthetic and medical intermediates are accessible through this protocol.

Automated summary

In this work, a palladium-catalyzed hydroalkoxycarbonylation and hydroxycarbonylation of cyclopent-3-en-1-ols is reported, which enables the synthesis of bridged bicyclic lactones and beta,gamma-unsaturated carboxylic acid. The reactivity of cyclopent-3-en-1-ols is controlled by the palladium catalyst and ligands. The reaction is additive-free and exhibits a broad substrate scope, allowing access to valuable synthetic and medical intermediates.