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