Direct Synthesis of Imines from <i>g</i><i>em</i>-Dibromomethylaryl Derivatives: Application to Unsymmetrically Substituted Bipyridine Frameworks
作者:Nicolas Weibel、Loïc J. Charbonnière、Raymond F. Ziessel
DOI:10.1021/jo020260u
日期:2002.11.1
from gem-dibromomethylaryl compounds and primary amines. The synthesis was applied to various aliphatic mono- and polyamines as well as to electron-rich anilines. The protocol was extended to 6-bromo-5'-dibromomethyl-2,2'-bipyridine to afford the corresponding imines. With n-propyl- and n-decylamine, further conversion, in three steps, to the corresponding 6-carboxy-5'-alkylaminomethyl-2,2'-bipyridine
从宝石-二溴甲基芳基化合物和伯胺开始,描述了一种用于一锅合成亚胺的有效方法。该合成应用于各种脂族单胺和多胺以及富电子苯胺。将该方案扩展至6-溴-5'-二溴甲基-2,2'-联吡啶,得到相应的亚胺。使用正丙基和正癸胺,可通过三个步骤选择性地进一步转化为相应的6-羧基-5'-烷基氨基甲基-2,2'-联吡啶衍生物,从而提供了新的三齿配体,这些配体可能会为阴离子或两性离子形式的镧系元素(III)阳离子的络合。