申请人:Bayer Aktiengesellschaft
公开号:US04216172A1
公开(公告)日:1980-08-05
A process for the preparation of a cyclobutanone of the formula ##STR1## in which R.sup.1 to R.sup.6 each independently is a hydrogen, halogen, cyano, alkoxy, alkoxycarbonyl, carboxamido, dialkylphosphono, alkyl, cycloalkyl, aryl, aralkyl or alkenyl radical, or two of them together with the carbon atom to which each is linked form a ring, comprising reacting an N,N-disubstituted carboxylic acid amide of the formula ##STR2## in which R.sup.7 and R.sup.8 each independently is an alkyl, cycloalkyl, alkenyl, aryl or aralkyl radical or together form a ring, with an inorganic acid halide, and then reacting the product with a tertiary amine, an olefin of the formula ##STR3## and a Lewis acid, and subsequently hydrolyzing the mass. Preferably isobutyric acid dimethylamide is employed as the carboxylic acid amide, phosgene is employed as the inorganic acid halide, triethylamine is employed as the tertiary amine and zinc chloride or titanium tetrachloride is employed as the Lewis acid. The products are known intermediates for insecticides.
一种制备分子式为##STR1##的环丁酮的方法,其中R.sup.1至R.sup.6分别独立地是氢、卤素、氰基、烷氧基、烷氧羰基、羧胺基、二烷基磷酸酯基、烷基、环烷基、芳基、芳基烷基或烯基基团,或其中的两个与其连接的碳原子形成环,包括将分子式为##STR2##的N,N-二取代羧酸酰胺与无机酸卤反应,然后将产物与三级胺、分子式为##STR3##的烯烃和路易斯酸反应,随后水解。最好使用异丁酸二甲酰胺作为羧酸酰胺,光气作为无机酸卤,三乙胺作为三级胺,氯化锌或四氯化钛作为路易斯酸。产品是杀虫剂的已知中间体。