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A CTV Analogue: Arene-Persubstituted Cyclotrixylohydroquinoylene and Its Derivatives

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journal contribution
posted on 28.10.2020, 20:04 by Jianmin Jiao, Baobao Sun, Yihan Ding, Hao Zheng, Yue Zhao, Juli Jiang, Chen Lin, Leyong Wang
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.