Synthesis and Structure of Upper-Rim 1,3-Alternate Tetraoxacalix[2]arene[2]triazine Azacrowns and Change of Cavity in Response to Fluoride Anion

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• 作者：Bao-Yong Hou ; De-Xian Wang ; Hai-Bo Yang ; Qi-Yu Zheng ; Mei-Xiang Wang
• 刊名：Journal of Organic Chemistry
• 出版年：2007
• 出版时间：July 6, 2007
• 年：2007
• 卷：72
• 期：14
• 页码：5218 - 5226
• 全文大小：351K
• 年卷期：v.72,no.14(July 6, 2007)
• ISSN：1520-6904

文摘

The upper-rim 1,3-alternate tetraoxacalix[2]arene[2]triazine azacrowns were constructed effectively bymacrocyclic condensation reaction of diamines with dichlorinated tetraoxacalix[2]arene[2]triazineintermediates that were synthesized from the stepwise fragment coupling reactions of 3,5-dihydroxybenzoicacid esters with cyanuric chlorides. Because of the formation of conjugation of amino groups with triazinerings, tetraoxacalix[2]arene[2]triazine azacrowns existed in a mixture of syn- and anti-isomeric forms.Both fluorescence titration and ¹H NMR spectroscopic study showed that tetraoxacalix[2]arene[2]triazineazacrowns interacted with fluoride anion, leading to cavity changes of the host molecules.