The invention relates to a process for producing all trans-vitamin A ester (I). According to the present invention, vitamin A ester (I) can simply be synthesized in good yields and high purity by the reaction of phosphonate compound (IV) with aldehyde (II) in an organic solvent in the presence of a base.
1
[EN] PROCESS FOR PRODUCTION OF VITAMIN A<br/>[FR] PROCÉDÉ DE PRODUCTION DE VITAMINE A
申请人:DSM IP ASSETS BV
公开号:WO2021197890A1
公开(公告)日:2021-10-07
The present invention relates to a new process for the production of vitamin A and/or its derivatives.
本发明涉及一种生产维生素A及/或其衍生物的新工艺。
US5424478A
申请人:——
公开号:US5424478A
公开(公告)日:1995-06-13
US6727381B2
申请人:——
公开号:US6727381B2
公开(公告)日:2004-04-27
Process for producing vitamin A derivatives
申请人:Takeda Chemical Industries, Ltd.
公开号:US05424478A1
公开(公告)日:1995-06-13
The present specification relates to an industrially advantageous process for producing vitamin A derivatives which are useful as medicaments, feed additives, food additives and the like. The process provides vitamin A derivatives, particularly all-trans vitamin A derivatives in high yield and purity.