title: Synthesis of optically active dihydropyrans from asymmetric [4 + 2] cycloaddition of β,γ-unsaturated α-ketoesters with allenic esters.
abstract: β-Isocupreidine (β-ICD) catalyzed asymmetric [4 + 2] cycloaddition of β,γ-unsaturated α-ketoesters with allenic esters afforded ester-substituted functionalized dihydropyran derivatives in high yields along with high enantioselectivities under mild conditions.
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China.
authors.forename: Cheng-Kui
authors.initials: CK
authors.lastname: Pei
authors.forename: Yu
authors.initials: Y
authors.lastname: Jiang
authors.forename: Min
authors.initials: M
authors.lastname: Shi
mesh_terms: D000466:Alkadienes / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D004952:Esters / Q000737:chemistry*; D006865:Hydrogenation; D007659:Ketones / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D011714:Pyrans / Q000138:chemical synthesis*; D013237:Stereoisomerism
chemical_list: D000466:Alkadienes; D004952:Esters; D007659:Ketones; D011714:Pyrans; C025947:propadiene