Ontology highlight
ABSTRACT:
SUBMITTER: Bhat BA
PROVIDER: S-EPMC4184455 | biostudies-other | 2014 Oct
REPOSITORIES: biostudies-other
The Journal of organic chemistry 20140916 19
A flexible approach to construct sterically congested bicyclo-alkenedione frameworks is reported. Under the action of potassium carbonate, α-sulphonyl cycloalkanones are added to functionalized allenyl esters, leading to a lactone intermediate that is subsequently reduced to initiate an intramolecular aldol cyclization to [3.2.1], [3.3.1], and [4.3.1] bicycles. Oxidation then affords bicyclic diones in good three-step yields. Under exceptionally mild conditions, these bicycles are converted to h ...[more]