[EN] PROCESS OF SEPARATING CHIRAL ISOMERS OF CHROMAN COMPOUNDS AND THEIR DERIVATIVES AND PRECURSORS<br/>[FR] PROCÉDÉ DE SÉPARATION DES ISOMÈRES CHIRAUX DES COMPOSÉS DE CHROMANE, DE LEURS DÉRIVÉS ET PRÉCURSEURS
申请人:DSM IP ASSETS BV
公开号:WO2012152779A1
公开(公告)日:2012-11-15
The present invention relates to a process of separating chiral isomers of chroman compounds, particularly tocopherols and tocotrienols as well as the esters and intermediates thereof. It has been found that this process allows a separation of the desired isomer with a higher yield and enables the use of the non-desired isomers in a very efficient way. Said process is particularly useful when implemented in an industrial process. Furthermore, it has been found that this process allows using isomer mixtures as they result from traditional industrial synthesis.
[EN] SEPARATION OF CHIRAL ISOMERS BY SFC<br/>[FR] SÉPARATION D'ISOMÈRES CHIRAUX PAR CPS
申请人:DSM IP ASSETS BV
公开号:WO2016188945A1
公开(公告)日:2016-12-01
The present invention relates to the field of separating chiral isomers from each other. Particularly, it relates to the field of separating of chiral isomers of chromane or chromene compounds, particularly tocopherols, 3,4-dehydro-tocopherols and tocotrienols, as well as the protected forms thereof. It has been found that the use of supercritical carbon dioxide as mobile phase combined with the very specific chiral phase as stationary phase leads to a very efficient separation of the individual chiral isomers. As the method is very efficient and fast combined with advantageous in view of ecology it is of big industrial interest.
[EN] PROCESS FOR PREPARING CHIRAL QUINONE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE QUINONE CHIRAL
申请人:DSM IP ASSETS BV
公开号:WO2013041676A1
公开(公告)日:2013-03-28
The present invention relates to a process of preparing tocotrienol quinones. It has been found that this process allows the formation of the R-isomer in a high yield in a very efficient and economically interesting way. Said process is particularly useful when implemented in an industrial process. Furthermore, it has been found that this process allows using isomer mixtures as they result from traditional industrial synthesis.
The present invention relates to a process of preparing tocotrienol quinones. It has been found that this process allows the formation of the R-isomer in a high yield in a very efficient and economically interesting way. Said process is particularly useful when implemented in an industrial process. Furthermore, it has been found that this process allows using isomer mixtures as they result from traditional industrial synthesis.