发明授权
- 专利标题： Preparation of halogenovinyl-substituted tetra-hydrofuran-2-ones
- 专利标题（中）： 卤代乙烯基取代的四氢呋喃-2-酮的制备
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申请号： US936988申请日： 1978-08-25
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公开(公告)号： US4225704A公开(公告)日： 1980-09-30
- 发明人: Hans-Georg Heine , Armin Hubner , Willy Hartmann
- 申请人： Hans-Georg Heine , Armin Hubner , Willy Hartmann
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX2740849 19770910
- 主分类号： C07C49/687
- IPC分类号： C07C49/687 ; C07C49/693 ; C07D307/33 ; C07D307/94 ; C07D307/20
摘要：
Halogenovinyl-substituted tetrahydrofuran-2-ones of the formula ##STR1## are prepared by reacting a peracid such as peracetic, perpropionic or m-chloroperbenzoic acid with a halogenvinyl-substituted cyclobutanone of the formula ##STR2## in which R.sup.1 to R.sup.8 can be hydrogen, halogen, cyano or various organic radicals, or in pairs can make up a ring.Products wherein R.sup.3 is not hydrogen or R.sup.1 is not halogen are new. The products are useful as intermediates in making insecticides.
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