A CTV Analogue: Arene-Persubstituted Cyclotrixylohydroquinoylene and Its Derivatives

Org Lett. 2020 Nov 20;22(22):8984-8988. doi: 10.1021/acs.orglett.0c03385. Epub 2020 Oct 28.

Abstract

A crown-shaped cyclotriveratrylene (CTV) analogue with persubstituted arene units-namely, cyclotrixylohydroquinoylene (CTX)-was synthesized from tetrasubstituted o-xylohydroquinone. Importantly, a series of CTX derivatives were prepared by introducing second bridged methylene, phenylphosphine oxide, and dimethylsilyl at the middle rim, referred to as CTX[CH2], CTX[P(O)Ph], and CTX[SiMe2], respectively, with the completely locked crown conformation, leading to the formation of unique C3-symmetric Chinese censer-shaped pocket structures. In addition, the water-soluble CTX[CH2] derivative (WCTX[CH2]) was synthesized from CTX[CH2] by simple oxidation reaction with the modification at the upper rim, and its host-guest interaction with methyl viologen in water was investigated.

Publication types

  • Research Support, Non-U.S. Gov't