PURPOSE: A method for producing 2-chloropyridine is provided, thereby the title compound having the improved stereo-selectivity can be cheaply produced in higher yield. CONSTITUTION: 2-chloropyridine of the formula is produced by solubilizing pyridine-1-oxide in organic solvent and reacting the ...
OF THE CHLORINATION REACTION. THE 2-CHLOROPYRIDINE OBTAINED CAN BE USED AS A CHEMICAL INTERMEDIARY. WALRAEVENS RENERENE WALRAEVENS, JAMES FRANKLIN ET PAUL TROUILLETFRANKLIN JAMESTROUILLET PAULGuenther Cramm,Hans Lindel.Process for the preparation of 2-chloropyridines.EP 508 217. 1992...
优先权号 -优先权日 - 分类号 B01J23/00; C07B61/00 申请人信息 申请(专利权)人 OLIN CORPORATION 发明人KYI, ROLAND R. 地址-邮编- 代理人信息 代理机构 -代理人 - 摘要 A process is provided for the preparation of 2-chloropyridine by the liquid phase hydrogenolysis of 2,6-dichloropyridine in ...
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Process for the preparation of substituted 2-chloropyridinesProcess for the preparation of substituted 2-chloropyridinesof EP0370317 A novel process for the preparation of substituted 2-chloropyridine derivatives of the formula (I) is made available, the substituents R, R, R and R in the formula ...
A process for the preparation of a substituted 2-chloropyridine derivatives of the formula <IMAGE> (I) in which R1, R2, R3 and R4 represent hydrogen or various other radicals, which comprises reacting a pyridine-1-oxide of the formula <IMAGE> (II) with an aromatic carbonyl chloride in the...
The invention provides a preparation method of 4-amino-3, 5, 6-chloropyridine-2-methanoic acid, which adopts 3, 4, 5, 6-tetrachloropyridine carbonitrile as a starting material, and obtains 4-amino-3, 5, 6-chloropyridine-2-carbonitrile by adding ammonia gas or liquid ammonia for ammonolysis...
Synthesis of Fluroxypyr for the Use on Broad Leaf Plants The process developed began with pentachloropyridine which on reaction with potassium fluoride in an aprotic dipolar solvent yielded 3,5-dichloro-2,3,6-trifluoropyridine. This was then subjected to ammonation followed by hydrolysis to ... ...
- 《Official Gazette of the United States Patent & Trademark Office Patents》 被引量: 451发表: 1996年 Synthesis and Fluorescence Characteristics of 2-Nanilinopyridine and 2 N-Anilinopyridine 2-N-Anilinopyridine and 3-N-anilinopyridine were obtained when aniline was refluxed with 2-chloropyridine ...
PROCESS FOR THE PREPARATION OF 3,5-DICHLOROPYRIDINE A process for the preparation of 3,5-dichloropyridine comprising reacting a trichloropyridine, a tetrachloropyridine or pentachloropyridine with zinc metal, in the presence of an acidic compound and at a temperature in the range 50-120 °C. BSM...