Novel [1<i><sub>n</sub></i>]-<i>meta</i>-Heterophane Frameworks with a Bis-Betaine Nature
作者:Ermitas Alcalde、Carlos Ayala、Immaculada Dinarès、Neus Mesquida、Francisco Sánchez-Ferrando
DOI:10.1021/jo005678b
日期:2001.4.1
A convergent "5 + 1" and "5 + 3" synthetic strategy allowed the synthesis of the first examples of bis-betaines 2 and 3, a prototype of phanes that incorporate heterocyclic betaines. The structure of the quadrupolar macrocyclic systems 2 and 3 together with the dicationic [1(6)]- and [1(8)] meta-heterophane precursors 5*2X and 6*2X were examined by spectroscopy using 1H and 13C NMR techniques together
融合的“ 5 +1”和“ 5 + 3”合成策略允许合成双甜菜碱2和3的第一个实例,双甜菜碱2和3是掺有杂环甜菜碱的phanes的原型。通过使用1H和13C NMR技术的光谱学方法研究了四极大环系统2和3的结构以及指示性的[1(6)]-和[1(8)]间-庚烷前体5 * 2X和6 * 2X。 1H-DNMR研究和电喷雾电离质谱。