title: Enantioselective synthesis of [9]- and [11]helicene-like molecules: double intramolecular [2+2+2] cycloaddition.
abstract: The enantioselective synthesis of completely ortho-fused [9]- and [11]helicene-like molecules has been achieved through a rhodium-mediated, intramolecular, double [2+2+2] cycloaddition of phenol- or 2-naphthol-linked hexaynes. Crystal structures and photophysical properties of these [9]- and [11]helicene-like molecules have also been disclosed.
authors: Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 (Japan).
authors: Yuki
authors: Y
authors: Kimura
authors: Naohiro
authors: N
authors: Fukawa
authors: Yuta
authors: Y
authors: Miyauchi
authors: Keiichi
authors: K
authors: Noguchi
authors: Ken
authors: K
authors: Tanaka
keywords: alkynes; cycloaddition; enantioselectivity; helical structures; rhodium