UNI-MB - logo
UMNIK - logo
 
E-resources
Full text
Peer reviewed
  • A Twisted Chiral Cavitand w...
    Shi, Tan-Hao; Nagata, Yuuya; Akine, Shigehisa; Ohtani, Shunsuke; Kato, Kenichi; Ogoshi, Tomoki

    Journal of the American Chemical Society, 12/2022, Volume: 144, Issue: 51
    Journal Article

    Controlling bottom-up syntheses from chiral seeds to construct architectures with specific chiralities is currently challenging. Herein, a twisted chiral cavitand with 5-fold symmetry was constructed by bottom-up synthesis using corannulene as the chiral seed and pillar5­arene as the chiral wall. After docking between the seed and the wall, their dynamic chiralities (M and P) are fixed. Moreover, the formed hedges also exhibit M and P chirality. Through dynamic covalent bonding, the thermodynamically stable product is obtained selectively as a pair of enantiomers (MMM and PPP), where all three subcomponents, i.e., the corannulene, hedges, and pillar5­arene, are tilted in the same direction. Furthermore, the twisted cavitand exhibits length-selective binding to alkylene dibromides, with three maximum binding constants being unexpectedly observed.