Synthesis and inclusion properties of O-tris(benzyloxy) hexahomotrioxacalix[3]arenes

Abstract

O-benzylation of hexahomotrioxacalix[3]arene with benzyl bromide gave tri-O-benzylated products with cone and partial-cone conformation, in a ratio governed by the base used. cone-Tris-O-benzyloxy derivative shows a selectivity for the n-butylammoniun ion.