Synthesis of 1-amino-1,3,3,5,5-pentamethylcyclohexane mesylate

C - Chemistry – Metallurgy – 07 – C

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C07C 303/32 (2006.01) A61K 31/13 (2006.01) C07C 211/35 (2006.01) C07C 309/04 (2006.01)

Patent

CA 2758756

Process for manufacturing 1-amino-1,3,3, 5, 5-pentamethylcyclohexane mesylate comprising step (i): (i) reacting 1-amino-1, 3, 3, 5, 5-pentamethylcyclohexane with methane sulfonic acid in a solvent or a mixture of two or more solvents selected among anisole, cumene; pentane, hexane, heptane, isooctane; methyl acetate, propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate; methyl ethyl ketone, methyl isopropylketone, methyl isobutyl ketone; dimethyl sulphoxide; tetrahydrofurane, methyltetrahydrofurane, 1,1-diethoxypropane, 1,1-dimethoxymethane, and 2,2--dimethoxypropane.

L'invention porte sur un procédé pour la fabrication de mésylate de 1-amino-1,3,3,5,5-pentaméthylcyclohexane comprenant l'étape (i) : (i) la réaction de 1-amino-1,3,3,5,5-pentaméthylcyclohexane avec de l'acide méthanesulphonique dans un solvant ou un mélange de deux ou plus de deux solvants choisis parmi l'anisole, le cumène ; le pentane, l'hexane, l'heptane, l'isooctane ; l'acétate de méthyle, l'acétate de propyle, l'acétate d'isopropyle, l'acétate de n-butyle, l'acétate d'isobutyle ; la méthyléthylcétone, la méthylisopropylcétone, la méthylisobutylcétone ; le diméthylsulfoxyde ; le tétrahydrofurane, le méthyltétrahydrofurane, le 1,1-diéthoxypropane, le 1,1-diméthoxyméthane, et le 2,2-diméthoxypropane.

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