351-83-7Relevant articles and documents
A Facile Regioselective Aromatic Fluorination of N-Aryl-N-hydroxyamides with Diethylaminosulfur Trifluoride (DAST)
Kikugawa, Yasuo,Matsumoto, Kazuhiro,Mitsui, Kimiyo,Sakamoto, Takeshi
, p. 921 - 922 (1992)
Treatment of N-aryl-N-hydroxyamides with diethylaminosulfur trifluoride (DAST) under conventional reaction conditions results in removal of the hydroxy function and introduction of a fluorine atom at the para position of the aromatic ring, in high yield.
4 - Fluorine substituted aryl amine compound and synthesis method thereof
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Paragraph 0045-0047, (2021/09/22)
The invention discloses a synthesis method of 4 -fluorine substituted aryl amine compound, which comprises the following steps: 1) taking acyl-protected phenylhydroxylamine as a substrate, and generating 4 -fluorine substituted aniline compound under basic conditions by taking sulfonyl fluoride as a fluorine source in a polar solvent. 2) The deprotection is carried out under dilute acid conditions or Pd by catalytic hydrogenation to give the 4 - fluorine-substituted aryl amine compound. 4 - Fluorine substituted aniline compounds which are synthesized by the invention greatly increase the lipophilic property due to the introduction of fluorine atoms, and can be widely applied to preparation of fluorine-containing drugs and pesticide and dye intermediates. , The adopted raw materials are industrial products, are cheap and easily available, and are commercially available. 4 - Fluoroaryl aniline prepared by the method is high in yield, and the product with the purity 90% can be obtained in a yield of more than ≥ 99%. The method is simple to operate and low in cost, is very suitable for industrialization, and can be widely popularized and used.
Efficient nitriding reagent and application thereof
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Paragraph 0131-0133, (2021/03/31)
The invention discloses an efficient nitriding reagent and application thereof, wherein the nitriding reagent comprises nitrogen oxide, an active agent, a reducing agent and an organic solvent. By applying the nitriding reagent, nitrogen-containing compounds such as amide, nitrile and the like can be produced, and the method is simple in condition, low in waste discharge amount and simple in reaction equipment.
