Method for preparing activated esters

Details Method for preparing activated esters Method for preparing activated esters

C - Chemistry, Metallurgy

07

C

C07C 211/62 (2006.01) C07C 323/52 (2006.01) C07D 207/46 (2006.01) C07D 213/71 (2006.01) C07D 401/12 (2006.01)

Patent

CA 2747105

The invention relates to a method for preparing an activated ester of the formula (I), where R is a (C1-C6) alkyl, aryl, heteroaryl, cycloalkyl, or heterocycloalkyl group, and ALK is a (C1-C6) alkylene group, said method consisting of reacting the dicyclohexylamine P1 salt and the disuccinimidyl carbonate (DSC) in a solvent in which the dicyclohexylamine salt of the N-hydroxysuccinimide P2 is precipitated. The invention also relates to products of the formula P1.

L'invention est relative à un procédé de préparation d'un ester activé de formule (I) dans laquelle R représente un groupe (C1-C6) alkyle, aryle, hétéroaryle, cycloalkyle, hétérocycloalkyle et Alk représente un groupe (C1-C6) alkylène, consistant à faire réagir le sel de dicyclohexylamine P1 : et le carbonate de disuccinimidyl e (DSC) dans un solvant dans lequel le sel dicyclohexylamine de la N-hydroxysuccinimide P2 précipite. L'invention est aussi relative aux produits de formule P1 :

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