New Cryptands Synthesized by [2+3] Condensation and Reduction with or without Templates

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Zhen Ma, Rudong Yang and Lan Yan


Abstract

A Schiff base cryptand is synthesized in 65–75 and 20% yield, respectively, via one-step [2+3] condensation of a flexible dialdehyde with tris(2-aminoethyl)amine in the presence and absence of template; a polyoxa-aza cryptand is synthesized in 75% yield upon reduction of the Schiff base.


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