367-34-0Relevant articles and documents
TRANSGLUTAMINASE 2 (TG2) INHIBITORS
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Paragraph 00839, (2020/03/02)
Described herein are compounds and pharmaceutical compositions containing such compounds which inhibit transglutaminase 2 (TG2). Also described herein are methods for using such TG2 inhibitors, alone or in combination with other compounds, for treating diseases or conditions that would benefit from TG2 inhibition.
Synthetic method for 1,2,4-trifluorobenzene
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, (2019/12/08)
The invention provides a synthetic method for 1,2,4-trifluorobenzene, belongs to the field of pesticide, medicine, and liquid crystal material intermediate preparation, and solves the problem of harshreaction conditions of a current method for synthesizing 1,2,4-trifluorobenzene. The synthetic method for the 1,2,4-trifluorobenzene is characterized by comprising the following steps: performing nitration by using 2,4-dichlorofluorobenzene as a raw material and nitric acid as a nitrating agent to form 2,4-dichloro-5-fluoronitrobenzene in the presence of sulfuric acid; dissolving the 2,4-dichloro-5-fluoronitrobenzene into an organic solvent, adding potassium fluoride and a first catalyst, and performing fluorination under the catalysis of the first catalyst to obtain 2,4,5-trifluoronitrobenzene; dissolving the 2,4,5-trifluoronitrobenzene into a solvent, and performing hydrogenation reduction with hydrogen under the catalysis of a second catalyst to obtain 2,4,5-trifluoroaniline; and performing a reaction on the 2,4,5-trifluoroaniline and sulfuric acid, after a salt is formed, performing a diazotization reaction on the salt and nitroso-sulfuric acid, performing a deamination reductionreaction with sodium hypophosphite under the catalysis of a copper salt, and finally performing steam distillation to obtain the 1,2,4-trifluorobenzene. The method provided by the invention has the advantages of mild reaction conditions and the like
Nitrogen-Doped Graphene-Supported Iron Catalyst for Highly Chemoselective Hydrogenation of Nitroarenes
Wei, Zuojun,Hou, Yaxin,Zhu, Xinmiao,Guo, Liangyu,Liu, Yingxin,Zhang, Anyun
, p. 2009 - 2013 (2018/03/21)
A nitrogen-doped graphene-supported iron catalyst was used for the first time in the hydrogenation of a series of nitroarenes to give the corresponding amines with excellent activity and chemoselectivity under mild reaction conditions. Physicochemical characterization of the catalyst by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and M?ssbauer spectroscopy revealed the formation of iron particles with an iron oxide core and a metallic iron shell that were coated by a few layers of nitrogen-doped graphene. The unique structure of FeNx/C in the catalyst was proven to contribute to the hydrogenation activity.
Interaction of polyfluorinated 2-chloroquinolines with ammonia
Skolyapova, Alexandrina D.,Selivanova, Galina A.,Tretyakov, Evgeny V.,Bogdanova, Tatjana F.,Shchegoleva, Lyudmila N.,Bagryanskaya, Irina Yu.,Gurskaya, Larisa Yu.,Shteingarts, Vitalij D.
, p. 1219 - 1229 (2017/02/18)
We have studied the interaction of polyfluorinated (in the benzene moiety) 2-chloroquinolines with liquid and aqueous ammonia as an approach to the synthesis of halogen-containing aminoquinolines. 5,7-Difluoro-, 5,6,8-trifluoro-, and 5,7,8-trifluoro-2-chloroquinolines mostly form products of substitution of the Cl atom, whereas 5,7-difluoro-2,6-dichloroquinoline, 5,6,7,8-tetrafluoro-, and 6,7-difluoro-2-chloroquinolines yield products of substitution of an F atom at various positions. The replacement of liquid ammonia with aqueous causes an increase in the proportion of the products of aminodechlorination relative to the products of aminodefluorination. For 2-chloro-6,8-difluoroquinoline this replacement leads to 2-amino-6,8-difluoroquinoline as the main product instead of the 8-amino-derivative. Activation energy values estimated by DFT calculations for the reactions in question agree with the reaction regioselectivity observed experimentally.
Synthesis of polyfluorinated 4-phenyl-3,4-dihydroquinolin-2-ones and quinolin-2-ones via superacidic activation of N-(polyfluorophenyl)cinnamamides
Safina, Larisa Yu.,Selivanova, Galina A.,Koltunov, Konstantin Yu.,Shteingarts, Vitalij D.
supporting information; experimental part, p. 5245 - 5247 (2009/12/06)
The cyclization reactions of a series of polyfluorocinnamanilides in triflic acid (CF3SO3H) yield 4-phenyl-3,4-dihydroquinolin-2-ones, which include a polyfluorinated benzene moiety as a part of the quinoline scaffold. These compounds undergo dehydrophenylation in the presence of AlCl3 to give the corresponding polyfluoroquinolin-2-ones which are converted into polyfluorinated 2-chloroquinolines on treatment with POCl3. A mechanism for the cyclization reaction presuming the intermediacy of a superelectrophilic O,C-diprotonated form of the starting material is suggested.
Electrophilic aromatic fluorination with fluorine: meta-Directed fluorination of anilines
Alric,Marquet,Billard,Langlois
, p. 661 - 667 (2007/10/03)
Anilines are mainly or selectively fluorinated in the meta-position with F2 when dissolved in triflic acid, sometimes in the presence of small quantities of antimony pentafluoride. The regioselectivity is increased when an electron-donating substituent is present at the para-position.
Fluorobenzene derivatives
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, (2008/06/13)
A compound of Formula (2): wherein: Y is -F or -Cl;, and a process for its preparation from a compound of Formula (3): wherein: Y is -F or -Cl; with a process for the preparation of a compound of Formula (3) from a compound of Formula (4): wherein: Y is -F or -Cl;, and a process for the conversion of a compound of Formula (2) into a compound of Formula (1): are provided. Compounds of Formula (1) are useful as intermediates in the manufacture of agrochemicals, pharmaceuticals and dyestuffs.
