发明名称 |
New sulfonyl compound and use of said compound in the process of producing vitamin A or its esters. |
摘要 |
<p>The invention relates to a new sulfonyl compound having the general formula <CHEM> wherein R1 is an unsubstituted or substituted aryl group; and R2 is a C1-C20 alkyl group, a C2-C20 alkenyl group or a C2-C20 alkynyl group, which groups may be substituted with one or more substituents selected from the group consisting of C1-C4 alkoxy, halogen, unsubstituted aryl and substituted aryl; or wherein R2 is a tri(hydrocarbyl)silyl group, an optionally lower-alkyl- substituted dihydro- or tetrahydropyran-2-yl group, an optionally lower- alkyl-substitute dihydro- or tetrahydro-fur-2-yl group, or a lower alkoxyalkylgroup. This sulfonyl compound can be used as an intermediate in the process of producing vitamin A or its esters.</p> |
申请公布号 |
EP0456287(A1) |
申请公布日期 |
1991.11.13 |
申请号 |
EP19910200666 |
申请日期 |
1991.03.25 |
申请人 |
DUPHAR INTERNATIONAL RESEARCH B.V |
发明人 |
LAGERWEIJ, GERRIT J.;BAKKER, CEES |
分类号 |
C07C45/71;C07C47/277;C07C317/18;C07C317/22;C07C403/08;C07C403/22;C07D309/06;C07D309/12;C07F7/18 |
主分类号 |
C07C45/71 |
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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