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 |
ZA200207320(B) |
申请公布日期 |
2003.05.12 |
申请号 |
ZA20020007320 |
申请日期 |
2002.09.12 |
申请人 |
PRODEMEX, S.A. DE C.V. |
发明人 |
DAVIS, JEFFERY, L.;SCHLOEMER, DANUTA, A.;SCHLOEMER, GEORGE, C. |
分类号 |
C07C;C07C45/00;C07C45/30;C07C49/203;C07C403/24 |
主分类号 |
C07C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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