An extremely efficient and direct route towards a range of binucleating analogues of 1,4,7-triazacyclononane 5a-f, has been developed. In all cases the reactions of benzylic and aliphatic diamines with ditosylate ester 3 proceed to give the target binucleating ligands almost exclusively and in excellent yield.
我们开发出了一条极为高效的直接途径,可以制备出一系列
1,4,7-三氮杂环壬烷 5a-f 的双核类似物。在所有情况下,苄基和脂肪族二胺与二对
甲苯磺酰基酯 3 的反应几乎都能得到目标双核
配体,而且收率极高。