Syntheses and conformational structures of functionalized tetraoxacalix[2]arene[2]triazines
作者:Shuai Pan、De-Xian Wang、Liang Zhao、Mei-Xiang Wang
DOI:10.1016/j.tet.2012.08.069
日期:2012.11
The syntheses and conformational structures of various functionalized tetraoxacalix[2]arene[2]triazines were studied. Applying the fragment coupling approach and the post-macrocyclization chemical manipulations, a number of tetraoxacalix[2]arene[2]triazines that contain, on the lower rim, one or two aldehyde, ester, carboxylic acid, hydroxymethyl, and aminomethyl functional groups were prepared in
研究了各种功能化的四氧杂acalix [2]芳烃[2]三嗪的合成和构象结构。应用片段偶联方法和宏观环化后的化学操作,许多四氧杂碳酰[2]芳烃[2]三嗪在下缘含有一个或两个醛,酯,羧酸,羟甲基和氨基甲基官能团由廉价和可商购的材料以中等到高的化学收率制备。根据X射线晶体学和NMR光谱,所有含吸电子基团的四氧杂acalix [2]芳烃[2]三嗪在溶液和固态均呈1,3-交替构型,