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    • 9. 发明授权
    • Method for producing oxime ethers
    • 生产肟醚的方法
    • US06680410B2
    • 2004-01-20
    • US10257327
    • 2002-10-10
    • Roland GötzBernd WolfMichael Rack
    • Roland GötzBernd WolfMichael Rack
    • C07C25156
    • C07C249/12C07C251/38
    • A process for preparing oxime ethers of the formula I, in which the substituents R1 and R2 can be identical or different and can each be cyano, alkyl, haloalkyl, cycloalkyl, phenyl and naphthyl, and R3 can be alkyl, by alkylation of oximes of the formula II under basic conditions with an alkylating agent from the group of alkyl halides, dialkyl sulfates and dialkyl carbonates, wherein the reaction is carried out in a mixture consisting of 5 to 25% by weight of polar aprotic solvents selected from the group of nitrites, N-alkylpyrrolidones, cyclic urea derivatives, dimethylformamide and dimethylacetamide, 55 to 95% by weight of nonpolar solvents selected from the group of aliphatic hydrocarbons, aromatic hydrocarbons, alkyl alkylcarboxylates and ethers, and 0 to 25% by weight of water, the contents thereof totaling 100%.
    • 制备式I的肟醚的方法,其中取代基R 1和R 2可以相同或不同,并且各自可以是氰基,烷基,卤代烷基,环烷基,苯基和萘基,R 3, 可以通过烷基化剂从烷基卤化物,二烷基硫酸盐和碳酸二烷基酯在碱性条件下将式II的肟烷基化,其中该反应以5至25重量%的极性非质子 选自亚硝酸盐,N-烷基吡咯烷酮,环脲衍生物,二甲基甲酰胺和二甲基乙酰胺的溶剂,55至95重量%的选自脂族烃,芳烃,烷基烷基羧酸盐和醚的非极性溶剂,和0至25% 水重量,总含量为100%。