发明名称 |
Process for the production of 4-alkanoyloxy-2-methylbutanoic acid |
摘要 |
The present invention relates to an improved process for the production of 4-alkanoyloxy-2-methylbutanoic acid, as well as to the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) for the synthesis of organic compounds comprising isoprene (isoterpene) units, such as β-carotene or other carotenoids (e.g. canthaxanthin, zeaxanthin or astaxanthin) or as vitamin E or vitamin A as well as other structurally similar compounds. |
申请公布号 |
US9447017(B2) |
申请公布日期 |
2016.09.20 |
申请号 |
US201314401868 |
申请日期 |
2013.06.05 |
申请人 |
DSM IP ASSETS B.V. |
发明人 |
Bonrath Werner;Schütz Jan;Wüstenberg Bettina;Netscher Thomas |
分类号 |
C07D311/00;C07C69/66;C07C67/29;C07C29/15;C07C45/00;C07D311/72 |
主分类号 |
C07D311/00 |
代理机构 |
Nixon & Vanderhye P.C. |
代理人 |
Nixon & Vanderhye P.C. |
主权项 |
1. A process for producing a compound of formula (I): wherein R signifies a C1-C15 alkyl moiety or a C2-C18 alkenyl moiety, wherein the process comprises oxidizing a compound of formula (II): wherein R in formula (II) is the same as defined for the compound of formula (I), in an oxygen-containing gas and in the presence of at least one transition metal salt as a catalyst. |
地址 |
Heerlen NL |