Visible-light-promoted regioselective hydrocarboxylation of allenes with formate salt and CO₂

Abstract

Visible-light-promoted hydrocarboxylation of allenes with formate salt and CO2 was developed for the first time using commercially available [Ir(ppy)2(dtbbpy)]PF6 as photocatalyst. This strategy provides an efficient and practical method to...

Pd-Catalyzed Regioselective Hydrocarboxylation of Alkyl Terminal Olefins with Oxalic Acid

“…To circumvent some drawbacks associated with CO gas, efforts have also been made for the development of hydrocarboxylation with nongaseous CO surrogates . For example, we and others , have shown that hydrocarboxylation can be achieved with HCO 2 H under mild conditions assisted with HCO 2 Ar or Ac 2 O. , Readily available oxalic acid could also serve as a potential carbonyl source for the hydrocarboxylation of olefins with a possible distinct reaction mechanism, which could provide new opportunities to regulate the reactivity and selectivity. The hydrocarboxylation of olefins with oxalic acid in the presence of additional CO has been reported …”