title: Synthesis of 2- and 6-thienylazulenes by palladium-catalyzed direct arylation of 2- and 6-haloazulenes with thiophene derivatives.
abstract: Preparation of 2- and 6-thienylazulene derivatives was established by the palladium-catalyzed direct cross-coupling reaction of 2- and 6-haloazulenes with the corresponding thiophene derivatives in good yield. Several thienylazulene derivatives were also used in the reaction with 2-chloroazulene derivatives in the presence of the palladium-catalyst to afford the thiophene derivatives with two azulene functions in good yield.
authors: Department of Chemistry, Faculty School of Science, Shinshu University, Matsumoto 390-8621, Nagano, Japan. tshoji@shinshu-u.ac.jp.
authors: Taku
authors: T
authors: Shoji
authors: Akifumi
authors: A
authors: Maruyama
authors: Takanori
authors: T
authors: Araki
authors: Shunji
authors: S
authors: Ito
authors: Tetsuo
authors: T
authors: Okujima