Synthesis of terpyridine-substituted calix[n]arenes
摘要:
Calix[n]arenes (n = 4,5) comprising 4-(2,2':6',2 ''-terpyridyl)-phenyl substituents at the upper rim were synthesized for the first time, employing Suzuki-type coupling reactions. All calix[n]arene derivatives were prepared as cone conformers. The single crystal X-ray structure of cone-5,11,17,23-tetra{4-(2,2':6',2 ''-terpyridyl)-phenyl)-25,26,27,28-tetrabutoxycalix[4]arene 4 is analyzed in terms Of Structural rigidity and potential use of these ligands as novel synthons of cage-type metallosupramolecular assemblies. (C) 2009 Elsevier Ltd. All rights reserved.