6315-94-2Relevant articles and documents
Synthesis method of 2,4-dichloroquinoline compound
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Paragraph 0024-0029, (2021/07/17)
The invention discloses a synthesis method of a 2,4-dichloroquinoline compound, belonging to the technical field of organic synthesis. The method comprises the following steps: at room temperature, mixing triphosgene and triphenylphosphine oxide, dissolving the mixture in an organic solvent, stirring for 10-30 minutes, adding an alpha-substituted acetyl arylamine compound, heating the reaction system to 90-130 DEG C, continuously stirring and reacting for 3-6 hours, and post-treating the obtained reaction liquid to obtain the 2,4-dichloroquinoline compound. The method for synthesizing the 2, 4-dichloroquinoline compound has the advantages of few steps, high yield and safer and more convenient operation; meanwhile, the triphenylphosphine oxide used in the reaction can be recycled, so that the emission of phosphorus-containing wastes is greatly reduced, and the method is suitable for industrial production.
Facile synthesis of 4-substituted-2-quinolinone-3-carboxylic acid ethyl esters
Zhang, Lijuan,Luo, Yu,Yu, Shanbao,Lu, Wei
, p. 1254 - 1256,3 (2020/09/16)
An efficient route for the synthesis of 4-substituted-2-quinolinone-3- carboxylic acid ethyl esters has been developed through Suzuki or Sonogashira reactions. The advantages of the method include high yields, operational simplicity, and suitability for m
4-Hydroxyquinol-2-ones. 85*. Synthesis of 2-chloro-4- hydroxyquinoline-3-carboxylic acid ethyl ester
Ukrainets,Gorokhova,Sidorenko
, p. 1019 - 1021 (2007/10/03)
The behavior of 2-chloro-4-hydroxy- and 4-chloro-2-oxoquinoline-3- carboxylic acids under acid catalyzed esterification conditions with methanol has been studied. A method is proposed for obtaining 2-chloro-4- hydroxyquinoline-3-carboxylic acid ethyl ester.