Patent ID: 6794531
Filing Date: 2004-09-21
Classification: A23L,C07K

Abstract:
A process for producing a compound of formula (3): wherein R1, R2, R3, R4, and R5 are independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an alkoxy group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms, and a hydroxyalkyloxy group having 2 or 3 carbon atoms, wherein said process comprises:(a) converting a carboxyl group in a compound of formula (4) into a formyl group: wherein R1, R2, R3, R4, and R5 are as defined above, to obtain a compound of formula (2): wherein R1, R2, R3, R4, and R5 are defined as above; and (b) reductively alkylating aspartame with said compound of formula (2) and hydrogen in the presence of catalyst, to obtain said compound of formula (3).