title: Photolability of per-arylated butadienes: en route to dihydronaphthalenes.
abstract: Arylated butadienes were prepared employing transition-metal coupling techniques and characterized via UV/vis spectroscopy and X-ray crystal structure analysis. Identification of byproducts led to a photochemical route toward novel multiarylated dihydronaphthalenes. Arylbutadiene-dihydronaphthalene cyclization occurs in solution and in the solid state. Upon substitution of hexaphenylbutadiene, absorption is red-shifted and stability under ambient light is even more reduced.
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Freudenberg
authors.forename: Andrea C
authors.initials: AC
authors.lastname: Uptmoor
authors.forename: Frank
authors.initials: F
authors.lastname: Rominger
authors.forename: Uwe H F
authors.initials: UH
authors.lastname: Bunz