Synthesis of sterically hindered secondary aminoether...

Details Synthesis of sterically hindered secondary aminoether... Synthesis of sterically hindered secondary aminoether...

C - Chemistry, Metallurgy

07

C

C07C 209/22 (2006.01)

Patent

CA 2555530

Severely sterically hindered secondary aminoether alcohols are prepared by reacting acid anhydrides or organic carboxylic acid halides with S03 to yield a sulfonic carboxylic anhydride compound which is then reacted with a dioxane to cleave the ring of the dioxane yielding a cleavage product which is then aminated with an alkylamine and hydrolyzed with a base to yield the severely sterically hindered secondary aminoether alcohol.

Selon l'invention, pour préparer des alcools d'aminoéther secondaire à encombrement stérique sévère, on fait réagir des anhydrides acides ou des halogénures acides carboxyliques organiques avec S0¿3? afin d'obtenir un composé d'anhydride carboxylique sulfonique que l'on fait ensuite réagir avec un dioxane afin de cliver le noyau du dioxane, obtenant ainsi un produit de clivage qui est ensuite aminé avec un alkylamine et hydrolysé avec une base afin d'obtenir les alcools d'aminoéther secondaire à encombrement stérique sévère selon l'invention.

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