75993-41-8 = 82671-02-1 反应条件:1.1 Reagents: Phosphorus Pentachloride 标题:Pyridonecarboxylic Acids As Antibacterial Agents. Viii. An Alternative Synthesis Of Enoxacin Via Fluoronicotinic Acid Derivatives 作者:Miyamoto,Teruyuki; Et Al 参考文献:Chemical & Pharmaceutical Bulletin 日期:1987 卷标:35(6) 页码:2280-5]
74011-58-8 = 82671-02-1 反应条件:1.1 Reagents: Sodium Ethoxide,Sodium 3-Ethoxy-2-Fluoro-3-Oxoprop-1-En-1-Olate Solvents: Ethanol2.1 Reagents: Phosphorus Pentachloride 标题:Pyridonecarboxylic Acids As Antibacterial Agents. Viii. An Alternative Synthesis Of Enoxacin Via Fluoronicotinic Acid Derivatives 作者:Miyamoto,Teruyuki; Et Al 参考文献:Chemical & Pharmaceutical Bulletin 日期:1987 卷标:35(6) 页码:2280-5]
113237-18-6 = 82671-02-1 反应条件:1.1 Reagents: Phosphorus Trichloride 标题:Synthesis And Biological Activity Of Fluorine-Substituted Pyridine-Heterocyclic Carboxylate Compounds 作者:Zheng,Hui; Et Al 参考文献:Yingyong Huaxue 日期:2010 卷标:27(2) 页码:164-168]
75993-41-8 = 82671-02-1 [标题:Reaction Conditions 标题:1,8-Naphthyridine Derivatives And Their Salts 参考文献:Japan]
104866-50-4 = 82671-02-1 反应条件:1.1 Reagents: Ammonium Bromide Catalysts: Zinc Oxide (Zno) Solvents: Xylene 标题:Process For Producing Cyanopyridine Derivative By Reaction Of 3-Trichloromethylpyridine Derivative With Ammonium Halide 参考文献:World Intellectual Property Organization]
109-94-4 + 107-91-5 = 82671-02-1 反应条件:1.1 Reagents: Sodium Methoxide2.1 Reagents: Phosphorus Trichloride 标题:Synthesis And Biological Activity Of Fluorine-Substituted Pyridine-Heterocyclic Carboxylate Compounds 作者:Zheng,Hui; Et Al 参考文献:Yingyong Huaxue 日期:2010 卷标:27(2) 页码:164-168]
109-94-4 + 107-91-5 = 82671-02-1 反应条件:1.1 Reagents: Sodium Methoxide2.1 Reagents: Phosphorus Pentachloride 标题:Synthesis And Biological Activity Of Novel Fluorine-Containing Pyridine-Heterocyclic Acylamide Compounds 作者:Zheng,Hui; Et Al 参考文献:Nongyao 日期:2008 卷标:47(1) 页码:34-36]
5-Fluoro-2,6-Dihydroxynicotinamide置于五氯化磷体系中,化学反应 2.5H,以77%的收率获得产物3-氰基-2,6-二氯-5-氟吡啶 参考文献:Pyridonecarboxylic Acids As Antibacterial Gaents. Viii. An Alternative Synthesis Of Enoxacin Via Fluoronicotinic Acid Derivatives. 标题:Pyridonecarboxylic Acids As Antibacterial Gaents. Viii. An Alternative Synthesis Of Enoxacin Via Fluoronicotinic Acid Derivatives. 摘要:一种1,8-萘啶类抗菌剂依诺沙星的替代合成物被开发出来.目前的方法是通过在c-2处具有2-乙氧基羰基乙基氨基部分的5-氟烟酸乙酯的dieckmann型环化反应来构建1,8-萘啶环.这种烟酸酯是通过7个步骤从氟乙酸乙酯通过2,6-二氯-5-氟烟酸乙酯制备的. DOI:10.1248/cpb.35.2280
专利号:US-5204478-A 优先权日:1992-08-20 标题 :Process for the synthesis of 2,6-dichloro-5-fluoronicotinic acid and 2,6-dichloro-5-fluoronicotinoyl chloride 发明人:JENNINGS REX A 权利人:WARNER LAMBERT CO 摘要:An improved process for the preparation of 2,6-dichloro-5-fluoronicotinoyl chloride is described where a 2,6-dihydroxy-5-fluoronicotinic acid ester is converted in one step using phosphorus oxychloride and a lithium reagent to 2,6-dichloro-5-fluoronicotinoyl chloride and subsequent basic hydrolysis affords 2,6-dichloro-5-fluoronicotinic acid.
专利号:US-7642356-B2 优先权日:2005-09-16 标 题 :Process for preparing beta-ketoester compounds 发明人:SHIN HYUN IK; CHOI BO SEUNG; LEE JAE HOON 权利人:LG LIFE SCIENCES LTD 摘要:The present invention relates to a process for preparing a beta-keto ester compound of formula (1), which is an intermediate for the synthesis of quinolone antibiotics. Particularly, the present invention is characterized by the reaction of an organo nitrile compound with a salt of mono-alkyl malonate in the presence of metal salt, and so the reaction is easy to control due to its endothermic nature, and is devoid of lachrymatory reagents with excellent reproducibility. Subsequent in situ hydrolysis in the presence of aqueous acid solution provided the compound of formula (1).
专利号:EP-0655998-B1 优先权日:1992-08-20 标题:Improved process for the synthesis of 2,6-dichloro-5-fluoronicotinic acid and 2,6-dichloro-5-fluoronicotinoyl chloride
专利号:EP-0655998-A1 优先权日:1992-08-20 标 题 :METHOD FOR THE SYNTHESIS OF 2,6-DICHLOR-5-FLUORNICOTINIC ACID AND 2,6-DICHLOR-5-FLUORNICOTINOYL CHLORIDE.
专利号:US-6987199-B2 优先权日:2001-10-15 标题 :Process for preparing beta-ketoester compound 发明人:SHIN HYUN-LK; CHOI BO-SEUNG; CHOI SANG-CHUL 权利人:LG LIFE SCIENCES LTD 摘要:The present invention relates to a new process for preparing beta-ketoester compound of the following formula (1), which is a useful intermediate for the synthesis of such quinoline antibiotics as Ciprofloxacin, Levofloxacin, Gemifloxacin, Trovafloxacin, etc. The quinoline antibiotics obtained from the above compound of formula (1) show potent antibacterial activity, and so are advantageously used as a therapeutic agent for bacterial infections of humans or animals.
专利号:WO-9404501-A1 优先权日:1992-08-20 标题 :Improved process for the synthesis of 2,6-dichloro-5-fluoronicotinic acid and 2,6-dichloro-5-fluoronicotinoyl chloride