CAS: 135590-91-9; Diethyl 1-(2,4-Dichlorophenyl)-5-Methyl-4,5-Dihydro-1H-Pyrazole-3,5-Dicarboxylate

2,4-二氯苯胺置于盐酸,水,碳酸氢钠,Potassium Hydrogencarbonate,对苯二酚体系中,用 水 用作溶剂,化学反应 16.5H,反应生成吡唑解草酯
参考文献:一种吡唑解草酯的制备方法
标题:一种吡唑解草酯的制备方法
摘要:本发明涉及一种吡唑解草酯的制备方法,具体包括以下步骤:(A)取2‑氯乙酰乙酸乙酯,2,4‑二氯苯胺,无机酸和水混合,后加入亚硝酸钠水溶液形成反应体系进行重氮化及取代反应,得到2‑氯‑2‑(2,4‑二氯苯重氮基)乙酰乙酸乙酯;(B)向反应体系中加入无机碱调节ph至5~7,后加入碳酸氢盐水溶液进行水解反应,得到2‑氯‑2‑(2,4‑二氯苯腙基)乙酸乙酯,再依次加入阻聚剂,甲基丙烯酸乙酯和碳酸氢盐水溶液进行环化反应,经后处理得到吡唑解草酯.与现有技术相比,本发明重氮化及取代反应生成的中间体稳定,不需要分离中间体,方法操作简便,反应条件温和,水解用碳酸氢钠(或碳酸氢钾),原料价格便宜,用量少.

专利信息

专利号:WO-2024012791-A1
优先权日:2022-07-11
标题 :Electrochemical synthesis of pyrazolines and pyrazoles
发明人：BÄR ROBIN MAXIMILIAN; FORD MARK JAMES; KALDAS SHERIF JAMES; WALDVOGEL SIEGFRIED; HOFMANN SILJA; LINDEN MARTIN
权利人:BAYER AG
摘要:The present invention relates to an electrochemical process for the synthesis of pyrazolines and pyrazoles of formula (I). The process can be especially used for the synthesis of the herbicide safener mefenpyr-diethyl.

专利号:US-2021386068-A1
优先权日:2018-11-07
标题 :Compositions comprising pyridine carboxylate herbicides and very long chain fatty acid (vlcfa) synthesis inhibitor herbicides
发明人：KISTER JEREMY; SATCHIVI NORBERT M
权利人:CORTEVA AGRISCIENCE LLC
摘要:Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a VLCFA synthesis inhibitor herbicide. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof, and (b) a VLCFA synthesis inhibitor herbicide.

专利号:US-2021352899-A1
优先权日:2018-11-07
标题 :Compositions comprising pyridine carboxylate herbicides and fatty acid and lipid synthesis inhibitor herbicides
发明人：KISTER JEREMY; SATCHIVI NORBERT M
权利人:CORTEVA AGRISCIENCE LLC
摘要:Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a fatty acid and lipid synthesis inhibitor (FA/LSI) herbicide, an agriculturally acceptable salt or ester thereof, or mixtures thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a fatty acid and lipid synthesis inhibitor (FA/LSI) herbicide, an agriculturally acceptable salt or ester thereof, or mixtures thereof.

专利号:ES-2717283-T3
优先权日:2012-07-24
标 题:Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6- (4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid or a derivative thereof and herbicides inhibitors of VLCFA synthesis and synthesis of fatty acids / lipids

专利号:TW-I655905-B
优先权日:2012-07-24
标题 :Contains 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid or a derivative thereof and very long chain fatty acid (VLCFA) Synthesis of herbicidal compositions with fatty acid/fat synthesis inhibiting herbicides

专利号:US-9644469-B2
优先权日:2012-07-24
标题 :Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid or a derivative thereof and VLCFA and lipid synthesis inhibiting herbicides
发明人：YERKES CARLA N; MANN RICHARD K; SHIRAISHI IKUO; YANAGIYAMA SHINGO; SATCHIVI NORBERT M
权利人:DOW AGROSCIENCES LLC
摘要:A synergistic herbicidal composition containing (a) a compound of formula (I): n nor an agriculturally acceptable salt or ester thereof and (b) VLCFA and fatty acid/lipid synthesis inhibiting herbicides, including but not limited to, acetochlor, alachlor, anilofos, benfuresate, cafenstrole, dimethenamid-P, fentrazamide, indanofan, flufenacet, mefenacet, s-metolachlor, molinate, pethoxamid, pretilachlor, prosulfocarb, pyroxasulfone, thenylchlor and thiobencarb, or a salt or ester thereof, provide synergistic weed control of undesirable vegetation in direct-seeded, water-seeded and transplanted rice, cereals, wheat, barley, oats, rye, sorghum, corn or maize, sugarcane, sunflower, oilseed rape, canola, sugar beet, soybean, cotton, pineapple, pastures, grasslands, rangelands, fallowland, turf, tree and vine orchards, aquatics, plantation crops, vegetables, industrial vegetation management (IVM) or rights-of-way (ROW).