2-(4-氟-3-苯氧基苯基)-1,3-二氧杂环戊烷 在
乙醇 、 甲苯 、 水 、 Sodium sulfate-III 作用下,
以
乙醇 、 水 、 盐酸 为溶剂,
25.0 ℃
、1.78 kPa
条件下,
反应 3.0h,
以19.6 g (91% of theory) of 4-fluoro-3-phenoxy-benzaldehyde were obtained in this manner in the form of a colorless oil with a boiling point of 102°-104° C./0.1 mm Hg的产率得到3-苯氧基-4-氟苯甲醛
参考文献:
名称:
Preparation of 4-fluoro-3-phenoxy-benzal-dehyde acetals and
Ligand free, highly efficient synthesis of diaryl ether over copper fluorapatite as heterogeneous reusable catalyst
作者:Shafeek A.R. Mulla、Suleman M. Inamdar、Mohsinkhan Y. Pathan、Santosh S. Chavan
DOI:10.1016/j.tetlet.2012.01.124
日期:2012.4
A novel ligand-free, highlyefficient, and an inexpensive method has been developed by using ecofriendly, heterogeneous reusable copper fluorapatite (CuFAP) catalyst for the synthesis of diaryl ethers from the cross coupling reaction of the various substituted aryl halides (fluoride, chloride, bromide, and iodide) with the potassium salts of various substituted phenols in the presence of N-methyl 2-pyrrolidone
The new compound ##STR1## is prepared and converted to the new acetal ##STR2## which is reacted with an alkali phenolate or alkaline earth metal phenolate in the presence of copper or a copper compound as a catalyst and in the presence of a diluent at a temperature between about 100.degree. and 200.degree. C. to produce the new acetal ##STR3## which can be hydrolyzed to the corresponding aldehyde which is a known intermediate for pyrethroid-like insecticides.
The new compound ##STR1## is prepared and converted to the new acetal ##STR2## which is reacted with an alkali phenolate or alkaline earth metal phenolate in the presence of copper or a copper compound as a catalyst and in the presence of a diluent at a temperature between about 100.degree. and 200.degree. C. to produce the new acetal ##STR3## which can be hydrolyzed to the corresponding aldehyde which is a known intermediate for pyrethroid-like insecticides.
4-Fluor-3-phenoxy-benzaldehyd-acetale und Verfahren zu deren Herstellung sowie Zwischenprodukte hierfür
申请人:BAYER AG
公开号:EP0024624A2
公开(公告)日:1981-03-11
Gegenstand der vorliegenden Erfindung sind neue 4-Fluor-3 -phenoxy-benzaldehyd -acetale der Formel I
in welcher die beiden Reste
R einzeln für Alkyl oder zusammen für Alkandiyl (Alkylen) stehen,
und ein Verfahren zu ihrer Herstellung sowie Zwischenprodukte hierfür.
本发明涉及式 I 的新型 4-氟-3-苯氧基苯甲醛缩醛,其中两个自由基 R 分别代表烷基或共同代表烷二基(亚烷基),还涉及其制备工艺及其中间体。
3-Brom-4-fluorbenzaldehyd und seine Acetale und Verfahren zu deren Herstellung
申请人:BAYER AG
公开号:EP0061004A1
公开(公告)日:1982-09-29
Die Erfindung betrifft 3-Brom-4-fluorbenzaldehyd und seine Acetale, sowie Verfahren zu deren Herstellung.