Method for preparation of carborane anions

C - Chemistry – Metallurgy – 07 – F

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C07F 5/02 (2006.01)

Patent

CA 2442419

This invention relates to an improved method for making unsubstituted carborane anions and monosubstituted carborane anions of formula: (R - CBn - Hm')- where n is an integer ranging from 5 to about 11 and m' is an integer ranging from 5 to 16 where the relative values of n and m' depend upon the exact structure of the carborane and the presence of a non-hydrogen substituent. m as used herein is an integer ranging from 5 to 16. When R is hydrogen the anion is unsubstituted. When R is a halogen, a phenyl, a substituted phenyl group, such as fluorophenyl group, or any other substituent, the carborane is substituted. The method is particularly useful for preparation of twelve-vertex carborane anions R - CB11H11-, where R is a defined above, and is specifically useful for preparation of the unsubstituted carborane CB11H12-, where R is H.

L'invention concerne un procédé amélioré de fabrication d'anions carborane non substitués et d'anions carborane monosubstitués de formule (R CB¿n? H¿m'?)?-¿ dans laquelle n est un entier compris entre 5 et 11 et m' est un entier compris entre 5 et 16 où les valeurs relatives de n et de m' dépendent de la structure exacte du carborane et de la présence d'un substituant non hydrogène ; m, comme il est utilisé ici, est un entier compris entre 5 et 16. Lorsque R représente hydrogène, l'anion est non substitué. Lorsque R est halogène, un phényle, un groupe phényle substitué, tel qu'un groupe fluorophényle, ou tout autre substituant, le carborane est substitué. Le procédé est particulièrement utile dans la préparation d'anions carborane à douze vertex R CB¿11?H¿11??-¿ , où R est tel que défini ci-dessus, et est particulièrement utile dans la préparation du carborane non substitué CB¿11?H¿12?-, où R est H.

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