Process for manufacturing...

Details Process for manufacturing... Process for manufacturing...

C - Chemistry, Metallurgy

07

D

C07D 453/02 (2006.01)

Patent

CA 2657679

This invention is directed to a process for manufacturing 3(R)-(2-hydroxy-2,2-dithien-2-ylacetoxy)-1-(3-phenoxypropyl)-1-azoniabicyclo[2.2.2]octane bromide by reacting 2-hydroxy-2,2-dithien-2-ylacetic acid 1-azabicyclo[2.2.2]oct-3(R)yl ester and 3-phenoxypropyl bromide, wherein the reaction takes place in a solvent or mixtures of solvents having a boiling point between 50 and 210°C and selected from the group consisting of ketones and cyclic ethers.

L'invention concerne un procédé de préparation de bromure de 3(R)-(2-hydroxy-2,2- dithièn-2-ylacétoxy)-1-(3-phénoxypropyl)-1-azoniabicyclo[2.2.2]octane par réaction entre un ester 1 -azabicyclo[2.2.2]oct-3(R)ylique d'acide 2-hydroxy-2,2-dithièn-2-ylacétique et du bromure 2-phénoxypropylique, la réaction ayant lieu dans un solvant ou des mélanges de solvants présentant un point d'ébullition compris entre 50 et 210°C, lesdits solvants étant choisis parmi des cétones et des éthers cycliques.

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