title: Synthesis of 2-alkenyl- and 2-alkynyl-benzo[b]phospholes by using palladium-catalyzed cross-coupling reactions.
abstract: Heck, Stille, and Sonogashira reactions of 2-bromobenzo[b]phosphole P-oxide afforded a series of 2-alkenyl- and 2-alkynyl-benzo[b]phosphole P-oxides. The charge-transfer character of the new benzo[b]phosphole π-systems in the excited state is enhanced by the terminal electron-donating substituents. Furthermore, the C-Sn cross-coupling of the bromide was applied to the facile synthesis of a new Stille-coupling precursor, 2-stannylbenzo[b]phosphole.
authors: Department of Chemistry, Faculty of Science, Niigata University, Niigata 950-2181, Japan. matano@chem.sc.niigata-u.ac.jp
authors: Yoshihiro
authors: Y
authors: Matano
authors: Yukiko
authors: Y
authors: Hayashi
authors: Kayo
authors: K
authors: Suda
authors: Yoshifumi
authors: Y
authors: Kimura
authors: Hiroshi
authors: H
authors: Imahori