title: Directed metalation cascade to access highly functionalized thieno[2,3-f]benzofuran and exploration as building blocks for organic electronics.
abstract: A tandem directed metalation has been successfully applied to the preparation of thieno[2,3-f]benzofuran-4,8-dione, providing an efficient and facile approach to symmetrically and unsymmetrically functionalize the thieno[2,3-f]benzofuran core at the 2,6 positions as well as to introduce the electron-withdrawing or -donating groups (EWG or EDG) at its 4,8 positions. The presence of various functional groups makes late-stage derivatization attainable.
authors.affiliation: Departement für Chemie und Biochemie, Universität Bern , Freiestrasse 3, CH-3012 Bern, Switzerland , and College of Chemistry, Xiangtan University , Xiangtan 411105, P.R. China.
authors.forename: Yves
authors.initials: Y
authors.lastname: Aeschi
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Zhencai
authors.initials: Z
authors.lastname: Cao
authors.forename: Songjie
authors.initials: S
authors.lastname: Chen
authors.forename: Anneliese
authors.initials: A
authors.lastname: Amacher
authors.forename: Nathalie
authors.initials: N
authors.lastname: Bieri
authors.forename: Bilal
authors.initials: B
authors.lastname: Özen
authors.forename: Juerg
authors.initials: J
authors.lastname: Hauser
authors.forename: Silvio
authors.initials: S
authors.lastname: Decurtins
authors.forename: Songting
authors.initials: S
authors.lastname: Tan
authors.forename: Shi-Xia
authors.initials: SX
authors.lastname: Liu