CONCAVE REAGENTS .19. SYNTHESIS, STRUCTURE, AND BASICITY OF A CALIX[6]ARENE BRIDGED BY AN ANILINE

Authors
ROSS H LUNING U
Citation
H. Ross et U. Luning, CONCAVE REAGENTS .19. SYNTHESIS, STRUCTURE, AND BASICITY OF A CALIX[6]ARENE BRIDGED BY AN ANILINE, Tetrahedron, 52(33), 1996, pp. 10879-10882
Citations number
21
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
52
Issue
33
Year of publication
1996
Pages
10879 - 10882
Database
ISI
SICI code
0040-4020(1996)52:33<10879:CR.SSA>2.0.ZU;2-2
Abstract
The bridged calix[6]arene 2, the first concave aniline, was synthesize d via the nitro compound 1 using iron pentacarbonyl as reducing agent. The basicity of 2 was investigated qualitatively and quantitatively. On the NMR time scale both compounds adopt a C-2v-symmetrical conforma tion but variable temperature NMR measurements reveal that 1 is in a C -s-symmetrical shape at deep temperatures. Copyright (C) 1996 Elsevier Science Ltd