The synthesis of new diaza-N-pivot lariat 15-crown-5 and 18-crown-6 macrocycles
作者:Jerald S. Bradshaw、Krzysztof E. Krakowiak、Haoyun An、Reed M. Izatt
DOI:10.1016/s0040-4020(01)86681-3
日期:1990.1
attached to one of the ring nitrogen atoms have been prepared in good yields. The ring closure step involved the reaction of a -secondary amine containing the tertiary aminoalkyl or hydroxyalkyl substituent with ethyleneglycol -(2-iodoethyl)ether or diethyleneglycol -(2-chloroethyl)ether plus sodium iodide. The starting tertiary aminoalkyl- or hydroxyalkyl-substituted -secondary aimine was prepared by reacting