Synthesis of sterically hindered secondary aminoether alcohols

Details Synthesis of sterically hindered secondary aminoether alcohols Synthesis of sterically hindered secondary aminoether alcohols

C - Chemistry, Metallurgy

07

C

C07C 213/00 (2006.01) C07C 213/02 (2006.01) C07C 213/08 (2006.01)

Patent

CA 2556766

Severely sterically hindered secondary aminoether alcohols are prepared by reacting an organic carboxylic acid or alkali metal salt of an organic carboxylic acid with a sulfonyl halide, a sulfuryl halide, a mixed sulfuryl ester halide or a mixed sulfuryl amide halide 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 cleavage product is then aminated with an alkylamine and hydrolyzed with base to yield the severely sterically hindered secondary aminoether alcohol.

On élabore des alcools aminoéther secondaires à encombrement stérique important par mise en réaction d~un acide carboxylique organique ou d~un sel de métal alcalin d~un acide carboxylique organique avec un halogénure sulfonyle, un halogénure sulfuryle, un halogénure d~ester sulfuryle mélangé ou un halogénure amide sulfuryle mélangé pour donner un composé anhydride sulfonique-carboxylique qui en ensuite mis en réaction avec un dioxane pour cliver l~anneau du dioxane, ce qui donne un produit de clivage, lequel produit de clivage est ensuite aminé avec une alkylamine et hydrolysé avec une base pour donner l~alcool aminoéther secondaire à encombrement stérique important.

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