Method for preparing organic, in particular lithocholic...

C - Chemistry – Metallurgy – 30 – B

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C30B 7/00 (2006.01) C07J 9/00 (2006.01) D01D 5/24 (2006.01) D01D 5/40 (2006.01) D01F 6/76 (2006.01) D01F 9/14 (2006.01)

Patent

CA 2453427

The invention concerns a method for preparing organic nanotubes in aqueous medium, comprising the following steps: a) preparing a basic aqueous solution having a pH of 10 to 14, preferably 12 to 13.5; b) adding to the solution a compound of formula (I), wherein: R?1¿ is a polycyclic radical with condensed C¿17?-C¿20? rings optionally comprising alkyl substituents; R?2¿ is a linear or branched C¿3?-C¿20? alkylene group; and R?3¿ represents a hydrogen atom, a C¿1?-C¿20? alkyl group or a C¿6?-C¿30? aromatic group; and c) stirring the solution for a time interval sufficient to form stable tubules of the organic compound in the solution. The organic compound may be lithocholic acid.

L'invention concerne un procédé de préparation de nanotubules organiques en milieu aqueux, comprenant les étapes suivantes: a) préparer une solution aqueuse basique ayant un pH de 10 à 14, de préférence 12 à 13,5, b) ajouter à la solution un composé organique de formule (I) dans laquelle R1 est un radical polycyclique à noyaux condensés en C17 à C20 comportant éventuellement des substituants alkyle, R2 est un groupe alkylène linéaire ou ramifié en C3 à C20 et R3 représente un atome d'hydrogène, un groupe alkyle en C1 à C20 ou un groupe aromatique en C6 à C30, et c) soumettre la solution à une agitation pendant une durée suffisante pour former des tubules stables du composé organique dans la solution. Le composé organique peut être l'acide lithocholique.

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