title: Highly enantioselective synthesis of silahelicenes using Ir-catalyzed [2+2+2] cycloaddition.
abstract: Silahelicenes, which contain two silole moieties in a helically chiral structure, were synthesized by a chiral Ir-catalyzed intermolecular [2+2+2] cycloaddition of tetraynes with diynes along with a Ni-mediated intramolecular [2+2+2] cycloaddition. The photophysical properties of the obtained highly enantiomerically enriched silahelicenes (up to 93% ee) were also measured.
authors.affiliation: Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan. tshibata@waseda.jp
authors.forename: Takanori
authors.initials: T
authors.lastname: Shibata
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Uchiyama
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yoshinami
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takayasu
authors.forename: Kyoji
authors.initials: K
authors.lastname: Tsuchikama
authors.forename: Kohei
authors.initials: K
authors.lastname: Endo