ISSN:
1434-193X
Keywords:
8-Hydroxyquinoline
;
Gallium
;
Cryptands
;
Self-assembly
;
Host-guest chemistry
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The tetra-decyl-substituted ethylene-linked bis(8-hydroxyquinoline) derivative 9-H2 is synthesized in an eight step procedure starting from 3-n-decyl-8-methoxyquinoline (1). NBS-bromination followed by a Suzuki-reaction enables the introduction of a decyl chain in the 5-position. In the key step of the sequence a mild (Ph3P)2NiBr2-catalyzed homo-coupling reaction of the benzyl bromide 7 is performed. In the presence of cationic templates (M+ = Na+, K+, NH4+) compound 9-H2 reacts with gallium(III) ions to form dinuclear complexes [M⊂{(9)3Ga2}]Cl in template-directed self-assembly processes. For the first time helicate-type cryptates are obtained which show good solubility in apolar solvents.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
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