title: Highly stereoselective [4+2] cycloaddition of azlactones to β,γ-unsaturated α-ketoesters catalyzed by an axially chiral guanidine base.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan. mterada@m.tohoku.ac.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Terada
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nii