Novel cryptands containing thiourea units as a part of the macrocyclic framework

Abstract

Alkylation of diaza-18-crown-6 by N-substituted phthalimides having a terminal halogen in the substituent, and subsequent product interaction with hydrazine hydrate and acid hydrolysis gave corresponding N,N′-disubstituted diaza-18-crown-6 compounds with terminal primary amino groups in the side chains. The reaction of these compounds with carbon disulfide or with appropriate bis[oligo(ethyleneoxy)]isothiocyanates afforded a series of novel cryptands with one or two thiourea units in one of the bridges.