The formation of complexes between aza-derivatives of crown ethers and primary alkylammonium salts. Part 2. Diaza-derivatives of metacyclophanes
作者:Stephen J. Leigh、Ian O. Sutherland
DOI:10.1039/p19790001089
日期:——
diazametacyclophanes (6) and the derivatives (15) have been synthesised and the formation of complexes between these host macrocycles and guest primary alkylammonium salts in CD2Cl2 has been examined using n.m.r. line-shape methods. In general the strengths of the complexes for any particular guest are in the order (6b) > (6c)(6a). A detailed examination of the complexes of (6b) shows that binding is
已经合成了重氮叠氮环烷(6)和衍生物(15),并使用nmr线形方法研究了这些主体大环与CD 2 Cl 2中客体伯烷基铵盐之间的络合物的形成。通常,对于任何特定客人而言,复合物的强度为(6b)>(6c)(6a)。对(6b)配合物的详细检查表明,结合受到宾客与宿主之间的空间相互作用,宾客阳离子中某些额外官能团的存在以及宾客NH 3缺乏亲脂性屏蔽的不利影响团体。由衍生物(15)形成的复合物受含有官能团的侧链的影响,并且在某些情况下,结合能相对于由叠氮环戊烷(6b)形成的复合物显着增加。