
TY  - JOUR
A1  - Crossley, MJ 
A1  - Gorjian, S 
A1  - Sternhell, S 
A1  - Tansey, KM 
T1  - The Synthesis of Some Lipophilic Tetradentate Ligands for Use in the Formation of Metal-Linked Polymers
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1994
VL  - 47
IS  - 4
SP  - 723
EP  - 738
KW  - 
UR  - https://doi.org/10.1071/CH9940723 
N2  - Two lipophilic tetradentate ligands, 5,5&#8242;-di-t-butyl- and 5,5&#8242;-dihexyl-2,2&#8242;-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&#8242;-biimidazole, namely 4,4&#8242;,5,5&#8242;-tetrabutyl-2,2&#8242;-biimidazole (from decane-4,5-dione) and various 4,4&#8242;,5,5&#8242;-tetra( arylamino )- 2,2&#8242;-biimidazoles (from 4,4&#8242;,5,5&#8242;-tetrabromo-2,2&#8242;-biimidazole and arylamines), and a 2,2&#8242;- bibenzimidazole , 5,5&#8242;,6,6?-tetra( octyloxy )-2,2&#8242;-bibenzimidazole (from N,N&#8242;- bis [4,5-di( octyloxy )-2-nitrophenyl] oxamide ), were uniformly unsuccessful for preparing the 2,2&#8242;-biheteroaryl compounds. 
ER  -

