作者:Tom Fricke、Šárka Chrápavá、Burkhard König
DOI:10.1081/scc-120014970
日期:2002.1
ABSTRACT We report a concise method for the preparation of 1,4,7,10-tetra-N-alkyl-1,4,7,10-tetraaza-cyclododecanes via deprotonation to the fourfold lithium amide followed by alkylation with alkyl bromides. The procedure circumvents the problem of ammonium salt formation and provides direct access to hydrophobic 1,4,7,10-tetraaza-cyclododecanes in moderate yield. The so obtained hydrophobic macrocycles
摘要 我们报告了一种通过去质子化成四重氨基锂然后用烷基溴化物烷基化来制备 1,4,7,10-四-N-烷基-1,4,7,10-四氮杂-环十二烷的简明方法。该程序避免了铵盐形成的问题,并以中等产率直接获得疏水性 1,4,7,10-四氮杂-环十二烷。如此获得的疏水大环被转化为相应的锌(II)、铜(II)、镍(II)和钴(II)配合物,它们可用作催化和阴离子提取中的水稳定路易斯酸。