A strategy for Synthesis and Incluison Properties of Artificial Molecular Tubes

Abstract

We have planned the synthetic strategy of molecular tubes with long and rigid cavities composed of 1,4-dibromopyromellitic diimide-based cyclophanes to use them as host molecules to accommodate guest molecules by charge transfer interactions. For this purpose, we want to design and synthesize [2+2] and [3+3] cyclophanes from 1,4-bis(aminomethyl)benzene derivatives and 1,4-dibromopyromellitic dianhydride for the construction of molecular tubes.Then introduction of ethynyl group to the bromo-substituted macrocycle by Sonogashira reaction and successive Glaser coupling may lead to the construction of tubular molecules. We want to report here these results.