title: Direct conjugate addition of alkynes with α,β-unsaturated carbonyl compounds catalyzed by NCN-pincer Ru complexes.
abstract: NCN-pincer Ru-complexes containing bis(oxazolinyl)phenyl ligands serve as suitable catalysts in the direct conjugate additions of α,β-unsaturated carbonyl compounds, including ketones, esters, and amides, as well as vinylphosphonates, giving various β-alkynyl carbonyl and phosphonate compounds. A bis(oxazolinyl)phenyl (phebox)-Ru complex also catalyzes the asymmetric conjugate addition of an alkyne with a β-substituted, α,β-unsaturated ketone to produce a chiral β-alkynyl ketone.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan. jito@apchem.nagoya-u.ac.jp
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Ito
authors.forename: Kohei
authors.initials: K
authors.lastname: Fujii
authors.forename: Hisao
authors.initials: H
authors.lastname: Nishiyama