21397-07-9Relevant articles and documents
Preparation method of 2 - fluorine -6 - nitroaniline
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Paragraph 0019-0021; 0025-0027; 0029-0031, (2021/09/08)
The invention discloses a preparation method of 2 -fluoro -6 - nitroaniline, and the specific steps of the preparation method are as follows: (1) taking M-fluoronitrobenzene as a starting raw material, reacting with hexachloroethane under the catalysis condition of tert-butyl alcohol lithium III, and reacting with hexachloroethane. (2) Compound III amine is hydrolyzed to give compound I. That is, the 2 - fluorine -6 - nitroaniline. To the invention, a large amount of easily toxic and easily-produced reagents are avoided in the full synthetic route process taking the meta-fluoronitrobenzene as a starting raw material, and the raw materials are low in price.
Design, synthesis and herbicidal activity study of aryl 2,6-disubstituted sulfonylureas as potent acetohydroxyacid synthase inhibitors
Wei, Wei,Zhou, Shaa,Cheng, Dandan,Li, Yuxin,Liu, Jingbo,Xie, Yongtao,Li, Yonghong,Li, Zhengming
supporting information, p. 3365 - 3369 (2017/07/07)
A series of sulfonylurea derivatives containing a 2,6-disubstituted aryl moiety were designed, synthesized and evaluated for their herbicidal activities. Most of these compounds showed excellent inhibitory rates against both monocotyledonous and dicotyledonous weeds, especially 10a, 10h and 10i. They exhibited equivalent or superior herbicidal efficiency than commercial chlorsulfuron at the dosage of 15?g/ha and the preliminary SAR was summarized. In order to illuminate the molecular mechanism of several potent compounds, their apparent inhibition constant (Kiapp) of Arabidopsis thaliana acetohydroxyacid synthase (AHAS) were determined and the results confirmed that these compounds were all potent AHAS inhibitors. 10i have a Kiapp of 11.5?nM, which is about 4 times as potent as chlorsulfuron (52.4?nM).
Approaches to the synthesis of 2,3-dihaloanilines. Useful precursors of 4-functionalized-1 H-indoles
Guilarte, Veronica,Castroviejo, M. Pilar,Garcia-Garcia, Patricia,Fernandez-Rodriguez, Manuel A.,Sanz, Roberto
experimental part, p. 3416 - 3437 (2011/06/28)
2,3-Dihaloanilines have been proved as useful starting materials for synthesizing 4-halo-1H-indoles. Subsequent or in situ functionalization of the prepared haloindoles allows the access to a wide variety of 2,4- or 2,3,4-regioselectively functionalized indoles in good overall yields. As no efficient synthetic routes to 2,3-dihaloanilines have been described in the literature, different approaches to the preparation of these 1,2,3-functionalized aromatic precursors are now presented. The most general one involves a Smiles rearrangement from the corresponding 2,3-dihalophenols and allows the preparation of 2,3-dihaloanilides in a straightforward and synthetically useful manner.
Hydroxy diphenyl urea sulfonamides as IL-8 receptor antagonists
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, (2008/06/13)
Novell IL-8 compounds and methods of using them are provided.
Process for the synthesis of fluorinated derivatives
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, (2008/06/13)
A process for the synthesis of fluorinated organic compounds and a reagent suitable for use in the process. The process is carried out by exchange with fluorides, while preferably agitating the reaction medium with ultrasonic sound.