title: Regioselective [2 + 2]-photocycloaddition reactions of chiral tetronates-influence of temperature, pressure, and reaction medium.
abstract: The intramolecular [2 + 2]-photocycloaddition of the 1,3-divinyl-2-cyclopentyl tetronates was performed under various conditions to give perfect diastereoselectivity and a regioselectivity of up to 85/15 in the presence of gamma-cyclodextrin by differentiating the two chemically very similar double bonds of .
authors.affiliation: Lehrstuhl für Organische Chemie 1, Technische Universität München, 85747 Garching, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Fleck
authors.forename: Cheng
authors.initials: C
authors.lastname: Yang
authors.forename: Takehiko
authors.initials: T
authors.lastname: Wada
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Inoue
authors.forename: Thorsten
authors.initials: T
authors.lastname: Bach