title: Reductive homocondensation of benzylidene- and alkylidenepyruvate esters by a P(NMe2)3-mediated tandem reaction.
abstract: A reductive homocondensation of E-benzylidenepyruvate esters mediated by P(NMe2)3 is described. The transformation, initiated by the Kukhtin-Ramirez addition of the phosphorus reagent to the vinyl-substituted α-dicarbonyl substrate, proceeds via a resonance delocalized oxyphosphonium dienolate intermediate to provide access to diverse oxygenated heterocycles as a function of the substituent.
authors.affiliation: Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.
authors.forename: Sunewang Rixin
authors.initials: SR
authors.lastname: Wang
authors.forename: Alexander T
authors.initials: AT
authors.lastname: Radosevich