[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES [FR] PROCÉDÉ POUR LA PRÉPARATION DE FORMES ÉNANTIOMÈRES DE DÉRIVÉS D'ACIDE 2,3-DIAMINOPROPIONIQUE
[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES [FR] PROCÉDÉ POUR LA PRÉPARATION DE FORMES ÉNANTIOMÈRES DE DÉRIVÉS D'ACIDE 2,3-DIAMINOPROPIONIQUE
PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES
申请人:SANOFI
公开号:US20130211085A1
公开(公告)日:2013-08-15
The disclosure relates to a process for the preparation of the enantiomeric forms of 2,3-diaminopropionic acid derivatives of formula I,
wherein R1, R2 and R3 are defined as in the dsiclosure, by racemate resolution. The separation of the racemate into its enantiomers takes place through formation of diastereomeric salts upon addition of an enantiomerically pure auxiliary, and subsequent separation by fractional crystallization.
[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE FORMES ÉNANTIOMÈRES DE DÉRIVÉS D'ACIDE 2,3-DIAMINOPROPIONIQUE
申请人:SANOFI SA
公开号:WO2012019967A1
公开(公告)日:2012-02-16
The invention relates to a process for the preparation of the enantiomeric forms of 2,3-diaminopropionic acid derivatives of formula (I), wherein R1, R2 and R3 are defined as in the claims, by racemate resolution. The separation of the racemate into its enantiomers takes place through formation of diastereomeric salts upon addition of an enantiomerically pure auxiliary, and subsequent separation by fractional crystallization.