发明名称 |
A MICROWAVE INDUCED PROCESS FOR THE PREPARATION OF SUBSTITUTED 4-VINYLPHENOLS |
摘要 |
<p>The present invention relates to "a microwave induced process for the preparation of 4-vinylphenols or its derivatives" in which commercially important FEMA GRAS approved perfumery and flavouring vinylphenols (i.e. hydroxystyrenes) namely 4-vinylguaiacol (FEMA GRAS No. 2675) and 4-vinylphenol (FEMA GRAS No. 3739) as well as other useful vinylphenols such as 2,6-dimethoxy-4-vinylphenol, 2-hydroxy-4-vinylphenol, 3-hydroxy-4-vinylphenol etc. by condensation of malonic acid and 4-hydroxyphenylaldehydes or its derivatives.</p> |
申请公布号 |
EP1575889(B1) |
申请公布日期 |
2007.06.06 |
申请号 |
EP20020788387 |
申请日期 |
2002.12.19 |
申请人 |
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
发明人 |
SINHA, ARUN, KUMAR;JOSHI, BHUPENDRA, PRASAD;SHARMA, ANUJ |
分类号 |
C07C37/20;C07C37/14;C07C39/20;C07C41/30;C07C43/23;C07C51/353;C07C51/38 |
主分类号 |
C07C37/20 |
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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