C - Chemistry – Metallurgy – 07 – K
Patent
C - Chemistry, Metallurgy
07
K
C07K 5/06 (2006.01) C07K 5/072 (2006.01)
Patent
CA 2278608
A method is disclosed for preparing and purifying N-[N-(3,3-dimethylbutyl)-L- .alpha.-aspartyl]-L-phenylalanine 1-methyl ester from aspartame and 3,3- dimethylbutyraldehyde by hydrogenation in an organic solvent solution followed by the formation of an aqueous/organic solvent solution having an organic solvent content of about 17 % to about 30 % by weight of the aqueous/organic solvent solution.
L'invention concerne un procédé destiné à la préparation et à la purification de N-[N-(3,3-diméthylbutyl)-L-.alpha.-aspartyl]-L-phénylalanine 1-méthyl ester à partir d'aspartame et de 3,3-diméthylbutyraldéhyde, par hydrogénation dans une solution de solvant organique, suivie de la formation d'une solution de solvant aqueux/organique présentant une teneur en solvant organique comprise entre 17 % environ et 30 % environ en poids de la solution de solvant aqueux/organique.
Mcfadden Fincham
Nutrasweet Property Holdings Inc.
The Nutrasweet Company
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