Unsymmetrical O-bridged calixarenes derived from tBu-calix[4]arene and p-benzylcalix[4]arene

Abstract

Bis-calixarenes derived from linking p-^tBu-calix[4]arene with p-^tBu-calix[n]arenes (n = 5, 8) via ethylene linkages have been prepared and structural authentication in the solid state for the compound with p-^tBu-calix[4]arene linked to p-^tBu-calix[5]arene has been carried out. The bis-calixarene derived from linking p-^tBu-calix[4]arene with p-benzylcalix[4]arene and its related chemistry are also reported.