Synthesis of chiral azamacrocycles using the bis(α-chloroacetamide)s derived from chiral 1,2-diphenylethylenediamine
作者:Kejiang Hu、Jerald S. Bradshaw、N. Kent Dalley、Guoping Xue、Reed M. Izatt、Krzysztof E. Krakowiak
DOI:10.1002/jhet.5570360204
日期:1999.3
secondary diamines with the (R,R)- and (S,S)- forms of 1,2-bis(N-methyl-α-chloracetamido)-1,2-diphenylethane (20). Macrocyclic diamides 9 and 10 were reduced to form the optically active diphenyl-substituted hexaaza-18-crown-6 (13) and tetraaza-12-crown-4 (14), respectively. Reduction of macrocyclic diamide ligands 11 and 12 gave a complex mixture of products from which the desired tetraaza-15-crown-5
光学活性的二苯基取代的四氮杂12皇冠4酰胺(10),四氮杂15皇冠5二酰胺(12),四氮杂18皇冠6二酰胺(11)和六氮杂18皇冠6二酰胺(9)配体是通过用(R,R)和(S,S)-形式的1,2-双(N-甲基-α-氯乙酰氨基)-1,2-二苯乙烷((R,R)-和(S,S)-形式处理来制备的。20)。还原大环二酰胺9和10以形成旋光性二苯基取代的hexaaza-18-crown-6(13)和tetraaza-12-crown-4(14)), 分别。大环二酰胺配体11和12的还原得到产物的复杂混合物,从中不能分离出所需的四氮杂-15-冠-5和18-冠-6化合物。二氯化物20通过用氯乙酸酐或氯乙酰氯处理1,2-二苯基乙二胺的手性形式制备。报道了二氯化物20的(R,R)形式和大环化合物10和11的(S,S)形式的晶体结构。