A direct synthetic approach to novel quadrupolar [1 4] azolophanes

E Alcalde, M Alemany, M Gisbert

Index: Alcalde, Ermitas; Alemany, Montserrat; Gisbert, Maria Tetrahedron, 1996 , vol. 52, # 48 p. 15171 - 15188

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Citation Number: 43

Abstract

A convergent '3+ 1'synthesis allowed a simple entrance to the first examples of [14] metaazolophanes 1 and [14](meta-ortho) 2azolophanes 2 built up from heterocyclic betaine subunits, illustrating a prototype of phanes constructed by both highly π-excessive and highly π-deficient heteroaromatic moieties linked in a 1, 3-alternating fashion.