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Review
. 2019 Aug 26;58(35):12264-12270.
doi: 10.1002/anie.201905905. Epub 2019 Jul 24.

Palladium-Catalyzed Enantioselective Thiocarbonylation of Styrenes

Affiliations
Review

Palladium-Catalyzed Enantioselective Thiocarbonylation of Styrenes

Xihong Wang et al. Angew Chem Int Ed Engl. .

Abstract

A highly enantioselective thiocarbonylation of styrenes with CO and thiols has been achieved by Pd catalysis, providing highly enantioenriched thioesters in good to excellent yields. Key to the successful execution of this reaction is the use of a chiral sulfoxide-(P-dialkyl)-phosphine (SOP) ligands. This thiocarbonylation proceeds smoothly under mild reaction conditions (1 atm CO and 0 °C) and displays broad substrate scope. Also demonstrated is that this transformation can be conducted using surrogates of CO, greatly increasing the safety aspects of running the reaction. The generality and utility of the method is manifested by its application to the synthetic transformations of thioester products and the direct acylation of cysteine-containing dipeptides. A primary mechanism was investigated and a plausible catalytic cycle was proposed.

Keywords: enantioselectivity; ligand design; palladium; synthetic methods; thiols.

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References

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