Facile Assembly of Chiral Tetrahydrothiopyrans Containing Four Consecutive Stereocenters via an Organocatalytic Enantioselective Michael–Michael Cascade
An organocatalyticenantioselective Michael–Michael cascadereaction has been implemented for the creation of structurally variant chiral tetrahydrothiopyrans. The process is realized by employment of new bifunctional ketothioether enones and proceeds highlyenantioselectively with formation of fourconsecutive stereogenic centers.