title: Preparation of highly hindered polyenes with tert-butyl groups in internal positions.
abstract: The conjugated tetraenes 3 and 4 a-c have been prepared and shown to possess an orthogonal structure. This was not only demonstrated by their spectroscopic properties and X-ray structural analysis of solid representatives (e.g., 4 a-c) but also by the resolution of these chiral compounds by GC and HPLC chromatography using various chiral selector systems. The chemical behavior of the typical tetraene 4 a has been studied using bromination, hydrogenation, epoxidation, and photo equilibration reactions.
authors.affiliation: Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Betz
authors.forename: Henning
authors.initials: H
authors.lastname: Hopf
authors.forename: Ludger
authors.initials: L
authors.lastname: Ernst
authors.forename: Peter G
authors.initials: PG
authors.lastname: Jones
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Okamoto