Synthesis, Characterisation and UV-Vis Properties of Azocalix[4]crowns |
| |
Authors: | M SAADIOUI Z ASFARI J VICENS N REYNIER J F DOZOL |
| |
Institution: | (1) Laboratoire de Chimie Analytique et Minérale, ECPM, URA 405 du CNRS, 1, rue Blaise Pascal, Strasbourg, F-67008, France;(2) Saint-Paul-Lez-Durance, CEA-Cadarache, F-13108, France |
| |
Abstract: | This article describes the synthesis, structure andUV properties of azocalixcrowns in which the photoresponsivetrans-cis azo benzene unit has been introduced in the glycolicchains of the calix4]crowns. The synthesis proceeded via the selective-1,3O-dialkylation of calix4]arene with glycolic chains terminated bynitrophenyl residues. After reduction of thenitro groups into amino functions,intramolecular oxidative coupling produced thecapping of the calixarene. Thesynthetic approaches and the cis-transstructure of these new ligandsare discussed and full details on synthesesand structural data are given. Apreliminary example of cesium complexation byone of the ligands is proposed. |
| |
Keywords: | Calix[4]arene calixcrowns cis-trans azo benzene unit |
本文献已被 SpringerLink 等数据库收录! |
|