Synthetic approaches to trialkyl(ferrocenylmethyl)ammonium salts as cationic templates for the preparation of ferromagnets on the basis of bimetal oxalates.

Autor: Troitskaya, L., Demeshchik, T., Sokolov, V., Mamed"yarova, I., Malezieux, B., Gruselle, M.
Zdroj: Russian Chemical Bulletin; Mar2001, Vol. 50 Issue 3, p497-503, 7p
Abstrakt: Trialkyl(ferrocenylmethyl)ammonium salts and their 2-substituted analogs designed for the preparation of molecular ferromagnetics based on bimetallic oxalates were synthesized using classical alkylation of dialkylaminomethylferrocenes by alkyl halides and nucleophilic substitution reaction of 2-substituted dimethylaminomethylferrocene methiodides with trialkylamines. In the case of salts with electron-donating substituents in position 2, only the latter of the two proposed routes is applicable because N-alkylation with alkyl halides is accompanied by competing ferrocenylmethylation of the starting amine. On the contrary, the salts with electron-withdrawing 2-substituents should be prepared preferably by the reaction of amines with alkyl halides, while nucleophilic trialkylamination of methiodides is complicated by deprotonation induced by bases. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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