In an article, published in an article, once mentioned the application of 14187-32-7, Name is Dibenzo-18-crown-6,molecular formula is C20H24O6, is a conventional compound. this article was the specific content is as follows.Computed Properties of C20H24O6
A new synthetic route to the molecular clip with diphenylglycoluril and dibenzo-18-crown-6 using protection-deprotection protocol is proposed. Yield of desired compound has increased from 10-15% to 41%. Starting from 4,5-dibromobenzene-1,2-diol 4,5-dibromodibenzo-18-crown-6 and then tetrabromo-substituted molecular clip were obtained. The target molecular clip was obtained by bromine cleavage by hydrogenolysis. Stability constants were determined by spectrophotometric titration with alkali metal cations and paraquat. Quantum-chemical calculations confirm the assumption of additional stabilization of complex with K+ by pi?pi stacking between the terminal aromatic fragments with formation of a ?pseudocryptand? type structure. The structures of complexes of the molecular clips with paraquat were determined by X-ray crystallography.
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