912469-48-8Relevant academic research and scientific papers
Nickel-Catalyzed Construction of Chiral 1-[6]Helicenols and Application in the Synthesis of [6]Helicene-Based Phosphinite Ligands
Tsujihara, Tetsuya,Inada-Nozaki, Nao,Takehara, Tsunayoshi,Zhou, Da-Yang,Suzuki, Takeyuki,Kawano, Tomikazu
, p. 4948 - 4952 (2016)
Two 1-[6]helicenol derivatives were synthesized by Ni-catalyzed [2+2+2] cycloaddition on a multigram scale. Both enantiomers of the 1-[6]helicenols could be efficiently prepared by simple optical resolution. As a synthetic application of helically chiral 1-[6]helicenols, a novel class of [6]helicene-based phosphinites was developed; these compounds represent the first examples of helically chiral phosphinite ligands. Up to 90 % ee was obtained for the Pd-catalyzed asymmetric allylic alkylation reaction.
Convergence in [2+2+2] synthesis of β-phenylnaphthalene motif in polyaromatic natural products
Takemura, Isao,Imura, Koreaki,Matsumoto, Takashi,Suzuki, Keisuke
, p. 6673 - 6676 (2007/10/03)
Two optional routes to β-phenylnaphthalene structure are developed by introducing α- and β-styryl groups onto different positions in the benzocyclobutene ring followed by ring enlargement.
