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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

The Synthesis of Some Lipophilic Tetradentate Ligands for Use in the Formation of Metal-Linked Polymers

MJ Crossley, S Gorjian, S Sternhell and KM Tansey

Australian Journal of Chemistry 47(4) 723 - 738
Published: 1994

Abstract

Two lipophilic tetradentate ligands, 5,5′-di-t-butyl- and 5,5′-dihexyl-2,2′-bipyrimidine, were prepared via either Ullmann or nickel(0)-promoted reactions in low but useful yields. Approaches towards the synthesis of lipophilic ligands based on 2,2′-biimidazole, namely 4,4′,5,5′-tetrabutyl-2,2′-biimidazole (from decane-4,5-dione) and various 4,4′,5,5′-tetra( arylamino )- 2,2′-biimidazoles (from 4,4′,5,5′-tetrabromo-2,2′-biimidazole and arylamines), and a 2,2′- bibenzimidazole , 5,5′,6,6?-tetra( octyloxy )-2,2′-bibenzimidazole (from N,N′- bis [4,5-di( octyloxy )-2-nitrophenyl] oxamide ), were uniformly unsuccessful for preparing the 2,2′-biheteroaryl compounds.

https://doi.org/10.1071/CH9940723

© CSIRO 1994

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