申请人:UNION CARBIDE CORPORATION
公开号:EP0107399A1
公开(公告)日:1984-05-02
A novel process is provided for the preparation of carbofuran and certain intermediate products. 1,2-Cyclohexanedione is alkylated with a beta-methallyl compound and the resulting product subjected to a Claisen rearrangement/aromatization to provide the carbofuran phenol. Reaction of the phenol with methyl isocyanate converts the phenol to the desired carbofuran.
提供了一种制备呋喃丹和某些中间产品的新工艺。1,2-Cyclohexanedione 与 beta-Methallyl 化合物发生烷基化反应,得到的产物经克莱森重排/芳香化反应生成呋喃苯酚。将苯酚与异氰酸甲酯反应,可将苯酚转化为所需的呋喃。