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Synthesis of Electron-Deficient Oxacalix[2]arene[2]triazines and Their Isomeric Analogs from a One-Pot Reaction of Perfluorinated Dihydroxybenzenes with Dichlorotriazines

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journal contribution
posted on 2013-09-06, 00:00 authored by Chi Yang, Yin Chen, De-Xian Wang, Liang Zhao, Mei-Xiang Wang
Efficient synthesis of tetraoxacalix[2]perfluoroarene[2]triazines and their isomeric analogs from a one-pot macrocyclic condensation reaction of methoxy- and amino-substituted dichlorotriazines with tetrafluorobenzene-1,3-, -1,4-, and -1,2-diols was developed. X-ray analysis demonstrates that they adopt drastically different 1,3-alternate conformations in the crystalline state while in solution they undergo very fast conformational changes relative to the NMR time scale.