会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 48. 发明申请
    • 3-CYANO-2,4,5-TRIFLUORO-BENZOYL FLUORIDE AND INTERMEDIATE PRODUCTS FOR THE PRODUCTION THEREOF
    • 3-氰基2,4,5三氟苯甲酰及其生产中间产品
    • WO98047862A1
    • 1998-10-29
    • PCT/EP1998/002175
    • 1998-04-14
    • B62J99/00C07C17/12C07C17/14C07C25/13C07C51/093C07C51/373C07C65/30C07C249/08C07C251/48C07C253/00C07C253/30C07C255/57G01C21/26G01C22/00
    • C07C255/57C07C17/12C07C17/14C07C25/13C07C251/48G01C21/26G01C22/002
    • The invention relates to 3-cyano-2,4,5-trifluoro-benzoyl fluoride and intermediate products for the production thereof and a method for the production of 3-cyano-2,4,5-trifluoro-benzoyl fluoride starting from 5-fluoro-1,3-xylol (VIII), which is chlorinated twice in the presence of a catalyst with ionic conditions in the nucleus to obtain 2,4-dichloro-5-fluoro-1,3-dymethylbenzol (VII), which is then chlorinated with radical conditions in the side chains to obtain 2,4-dichloro-5-fluoro-3-dichloromethyl-1-trichloromethyl benzol (VI), which is subsequently saponified by the optionally isolatable 2,4-dichloro-5-fluoro-3-dichloromethyl benzoic acid (V) to obtain 2,4-dichloro-5-fluoro-3-formyl-benzoic acid (IV) whose aldehyde group is converted to 2,4-dichloro-5-fluoro-3-N-hydroxyiminomethyl-benzoic acid (III), whereupon water is eliminated using an acid chloride while at the same time converting the carboxyl group into a chlorocarbonyl group to obtain nitrile 2,4-dichloro-3-cyano-5-fluoro-benzoyl-chloride (II), which is finally subjected to a fluorine/chlorine exchange.
    • 本发明涉及到3-氰基-2,4,5-三氟苯甲酰氟(I)和它的制备的中间体和用于制备3-氰基-2,4,5-三氟苯甲酰氟,5-氟过程 1,3-二甲苯(VIII)进行,其中在催化剂的存在下双氯化离子条件下在核心,得到2,4-二氯-5-氟-1,3-二甲基苯(VII)。 这是在侧链自由基条件下氯化,得到2,4-二氯-5-氟-3-二氯-1-三氯甲苯(VI)。 这是任选皂化绝缘2,4-二氯-5-氟-3-dichlormethylbenzoesäure(V),得到2,4-二氯-5-氟-3-甲酰基 - 苯甲酸(IV),醛基是2, 2,4-二氯-5-氟 - 3-N-羟基亚 - 苯甲酸(III)反应,并在同一时间将羧基转化成氯基团时,水从这些使用酰氯,得到腈2,4-二氯-3-氰基 - 形成, 5-氟 - 苯甲酰氯(II)被消除。 这是最后进行氟/氯交换。