发明名称 |
Preparation of 4,4'-diketo-beta-carotene derivatives |
摘要 |
A method of preparing beta-carotene derivatives such as canthaxanthin and astaxanthin is described. The method employs an in situ system to generate hypobromous acid as the oxidizing agent using a salt of sulfite, hydrogen sulfite or bisulfite in combination with a bromate salt. Astaxanthin and canthaxanthin are obtained in good yield with a significantly reduced reaction time.
|
申请公布号 |
US6372946(B1) |
申请公布日期 |
2002.04.16 |
申请号 |
US20010953007 |
申请日期 |
2001.09.13 |
申请人 |
PRODEMEX, S.A. DE C.V. |
发明人 |
SCHLOEMER GEORGE C.;SCHLOEMER DANUTA A.;DAVIS JEFFERY L. |
分类号 |
C07C;C07C45/00;C07C45/30;C07C49/203;C07C403/24;(IPC1-7):C07C45/00 |
主分类号 |
C07C |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|