title: Synergistic Lewis base and anion-binding catalysis for the enantioselective vinylogous addition of deconjugated butenolides to allenoates.
abstract: An enantioselective vinylogous umpolung addition of deconjugated butenolides to allenoates has been developed for the first time with the help of synergistic combination of an achiral phosphine and a chiral squaramide, and represents the first example of a catalytic enantioselective Cγ-Cγ bond formation between two different carbonyl partners.
authors.affiliation: Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India. sm@orgchem.iisc.ernet.in.
authors.forename: Vikas
authors.initials: V
authors.lastname: Kumar
authors.forename: Santanu
authors.initials: S
authors.lastname: Mukherjee