发明名称 |
PROCESS FOR THE RACEMIZATION OF OPTICALLY ACTIVE CHRYSANTHEMIC ACID AND ITS ESTER |
摘要 |
<p>Racemization of an optically active chrysanthemic acid or its ester of the formula: <CHEM> wherein R represents a hydrogen atom, an alkyl group of 1-20 carbon atoms, a cycloalkyl group of 3-20 carbon atoms or an aralkyl group of 7-20 carbon atoms and * mark indicates asymmetric carbon atom, is effected by contacting the acid or its ester with at least one compound selected from the group consisting of a carboxylic acid bromide, a silicon bromide, an S-bromine compound, and N-bromine compound, a halo-bromine compound and an SH compound in the presence of a peroxide or an azo compound.</p> |
申请公布号 |
HUT46879(A) |
申请公布日期 |
1988.12.28 |
申请号 |
HU19880001122 |
申请日期 |
1988.03.08 |
申请人 |
SUMITOMO CHEMICAL CO LTD,JP |
发明人 |
SUZUKAMU,GOHFU,JP;SAKITO,YOJI,JP;FUKAO,MASAMI,JP |
分类号 |
C07C51/487;(IPC1-7):C07B55/00;C07C69/747 |
主分类号 |
C07C51/487 |
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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