N-w trifluoroacetylation of saturated aliphatic...

C - Chemistry – Metallurgy – 07 – C

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260/525.3

C07C 231/02 (2006.01) C07C 233/31 (2006.01) C07C 233/36 (2006.01) C07C 233/46 (2006.01)

Patent

CA 1338329

L'invention concerne un procédé de N-.omega. tri- fluoroacétylation des .alpha.,.omega. -diaminoacides monocarboxyliques aliphatiques saturés à l'aide d'un dérivé de l'acide trifluoroacétique, caractérisé en ce que ledit dérivé de l'acide trifluoroacétique est un trifluoroacétate d'alkyle, linéaire ou ramifié, en C1-C4. Ce procédé permet de N- trifluoroacétyler régiosélectivement en .omega. les .alpha.-.omega. diami- noacides monocarboxyliques aliphatiques. Avantageusement, la régiosélectivité obtenue en .omega. est supérieure à 90%. L'invention concerne également les produits obtenus par la mise en oeuvre de ce procédé.

556725

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