Metal Complexes with Macrocyclic Ligands. IX. Synthesis and properties of a new class of branched N4-macrocycles with an additional ligating group in the side chain
作者:Tobias J. Lotz、Thomas A. Kaden
DOI:10.1002/hlca.19780610421
日期:1978.6.7
the complexes of either the open-chain ligand (3 and 11) or of the macrocycle (4 and 12). Reduction of the imino group in 4 and 12 with PtO2/H2 gives 5 and 13, respectively. In the case of the dimethylamino derivative 5 a mixture of at least four isomers was obtained. These were partially separated by chromatography on Sephadex SP-25 cation exchanger. Through demetalation of the Ni2+ complexes by cyanide
在Ni 2+存在下,2,6-二乙酰基吡啶与4-(2-二甲基氨基乙基)-或4-(2-羟乙基)-1,7-二氨基-4-氮杂庚烷之间的模板反应产生两个开放的络合物链配体(3和11)或大环的配体(4和12)。用PtO 2 / H 2还原4和12中的亚氨基基团分别得到5和13。在二甲基氨基衍生物5的情况下,获得至少四种异构体的混合物。通过Sephadex色谱法将其部分分离SP-25阳离子交换剂。通过用氰化物使Ni 2+络合物脱金属,分离出新的大环7和14,由此制备了相应的Zn 2+和Cu 2+络合物。