CAS: 10469-09-7; 3,4,5,6-Tetrachloropicolinic Acid

相似化合物

17824-83-8 40360-44-9 1702-17-6

上下游产品

2,3,4,5,6-pentachloropyridine carbon monoxide picloram3,5,6-trichloro-4-hydrazinopicolinic acid Clopyralid 4,5,6-trichloropicolinic acid 3,5,6-trichloropicolinic acid

4-氨基-3,5,6-三氯吡啶羧酸置于盐酸,Sodium Nitrite,Copper(L) Chloride体系中,用 甲苯 用作溶剂,化学反应 0.5H,以86.9%的收率获得四氯吡啶甲酸
参考文献:3,4,5,6-四氯吡啶甲酸的制备方法
标题:3,4,5,6-四氯吡啶甲酸的制备方法
摘要:本发明提供了3,4,5,6-四氯吡啶甲酸的制备方法,该方法以氨氯吡啶酸生产废渣或者是氨氯吡啶酸生产废渣进一步提纯后得到的残渣为原料,在强酸和惰性稀释剂的作用下,加入亚硝酸盐进行重氮化处理,然后再加入氯取代剂进行氯代反应制得3,4,5,6-四氯吡啶甲酸.该方法循环加工处理四氯吡啶甲酸氨解过程产生的少量其它同分异构体,将废渣中非农药有效成分转变为有实用价值的生产原材料,尽量减少废渣排放.所制备出的3,4,5,6-四氯吡啶甲酸有效含量大于95%,可满足氨氯吡啶酸工业生产的原料要求.

专利信息

专利号:CN-119410626-A
优先权日:2024-11-15
标 题:Magnetic nitrilase catalyst for green cyclic synthesis of organic acid, preparation method and application thereof

专利号:US-4755266-A
优先权日:1986-07-11
标题:Process for silver cathode activation
发明人：BON CHARLES K; KNOWLES VERA M
权利人:DOW CHEMICAL CO
摘要:Silver cathodes used in electrochemical synthesis are activated or reactivated after a period of use by immersion in a dilute alkaline aqueous solution of a compatible oxidizing agent. Thus, an expanded silver sheet cathode in an electrolytic cell used for the conversion of 3,4,5,6-tetrachloropicolinic acid to the herbicide 3,6-dichloropicolinic acid was reactivated by circulating an aqueous solution containing about 0.5 percent sodium hypochlorite and about 2 percent sodium hydroxide through the cell.

专利号:CN-103603006-A
优先权日:2013-09-29
标 题 :A kind of electrolytic synthesis process of 3,6-dichloropicolinic acid

专利号:CN-119592967-A
优先权日:2024-12-26
标题 :An improved electrolytic synthesis method of 3,6-dichloropicolinic acid