endo-, exo-Cavity hydride isomerism for an aluminium complex of dimetallated 1,3-dimethyl ether p-tert-butylcalix[4]arene

Reaction of 1,3-dimethyl ether p-tert-butylcalix[4]arene 1 with H(3)AlNMe(3) in toluene gives an isomeric mixture of monomeric five-coordinate metallocalixarene species derived from dimetallation with the metal centres attached to four oxygens and a hydride either exo (2a) or endo (2b) to the calixa...

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Bibliographic Details
Published inChemical communications (Cambridge, England) no. 17; pp. 2035 - 2036
Main Authors Gardiner, MG, Koutsantonis, GA, Lawrence, SM, Nichols, PJ, Raston, CL
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 1996
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
CALIXARENE
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Summary:Reaction of 1,3-dimethyl ether p-tert-butylcalix[4]arene 1 with H(3)AlNMe(3) in toluene gives an isomeric mixture of monomeric five-coordinate metallocalixarene species derived from dimetallation with the metal centres attached to four oxygens and a hydride either exo (2a) or endo (2b) to the calixarene cavity; 2a is converted to thermodynamically favoured 2b in the presence of H(3)AlNMe(3), with the chloro-analogue of 2a, 3 (formed exclusively from the reaction of 1 and AlCl3) preferentially affording 2b when treated with NaH.
ISSN:1359-7345
1364-548X
DOI:10.1039/CC9960002035