发明授权
US4120868A Cyclic 2-methyl-2,4-dialkoxy-3-buten-1-al-acetals, their preparation and
use
失效
环己基-2-甲基-2,4-二烷氧基-3-丁烯-1-缩醛，其制备和用途
- 专利标题： Cyclic 2-methyl-2,4-dialkoxy-3-buten-1-al-acetals, their preparation and use
- 专利标题（中）： 环己基-2-甲基-2,4-二烷氧基-3-丁烯-1-缩醛，其制备和用途
-
申请号： US859020申请日： 1977-12-09
-
公开(公告)号： US4120868A公开(公告)日： 1978-10-17
- 发明人: Hagen Jaedicke , Joachim Paust
- 申请人： Hagen Jaedicke , Joachim Paust
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX2659507 19761230
- 主分类号： C07D319/06
- IPC分类号： C07D319/06 ; C07D319/04
摘要：
New acetals, containing a 6-membered ring, of 2-methyl-2,4-dialkoxy-3-buten-1-al, are obtained by reacting the corresponding 2-methyl-2-alkoxy-3-butyn-1-al-acetals with a mixture of the appropriate alcohol and an alkali metal alcoholate of the said alcohol at from 100.degree. to 200.degree. C. The acetals are intermediates for the preparation of carotinoid-based physiologically safe food dyes.
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