Enantioselective Intermolecular Ruthenium-Catalyzed Cycloaddition
Enantioselective Ruthenium-Catalyzed Benzocyclobutenone–Ketol Cycloaddition: Merging C–C Bond Activation and Transfer Hydrogenative Coupling for Type II Polyketide Construction.
J. Am. Chem. Soc. 2018;
17 September 2018 (online)
Key wordsruthenium catalysis - cycloaddition - C–C activation - transfer hydrogenation - polyketides
Metal-catalyzed cycloaddition is one of the most active areas of research. The authors have developed an enantioselective intermolecular cycloaddition of benzocyclobutenones with tetralone-derived ketols through a C–C bond oxidative addition catalyzed by a chiral ruthenium–DM-SEGPHOS complex.
This ruthenium-catalyzed intermolecular cycloaddition merging C–C bond activation and transfer hydrogenative coupling proceeds smoothly in moderate to high yield with excellent enantio-, diastereo-, and regioselectivities. The obtained products can be transformed into the corresponding compounds containing dione and amine motifs.