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 209/22 (2006.01)

Patent

CA 2556508

Severely sterically hindered secondary aminoether alcohols are prepared by reacting organic carboxylic, organic carboxylic acid halides, acid anhydrides or a ketene with an alkyl, alkaryl or alkylhalo sulfonate 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 de composés carboxyliques organiques, d~halogénures d~acide carboxylique organique, d~anhydrides acides, ou d~une cétène avec un sulfonate alkyle, alkaryle ou bien alkylhalogène pour donner un composé anhydride sulfonique carboxylique, qui est 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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