53250-83-2Relevant articles and documents
Preparation method of free radical initiator and application of free radical initiator in oxidation reaction
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Paragraph 0027; 0030-0031; 0034-0035; 0038-0039; 0042; ..., (2021/11/06)
The invention discloses a preparation method of a free radical initiator, the preparation method comprises the following steps: feeding a hydroxylamine raw material, inorganic base and water according to a ratio, and carrying out acid-base neutralization reaction at 0-25 DEG C to dissociate hydroxylamine; adding tetrachlorophthalic anhydride, stirring at room temperature to react for 0.5-2 hours, reacting at 60-95 DEG C for 4-12 hours, washing with water, and drying at 60-80 DEG C for 10-24 hours to obtain an N-hydroxyl tetrachlorophthalimide crude product; and recrystallizing the N-hydroxyl tetrachlorophthalimide crude product in a mixed solvent of toluene and ethanol, filtering, and drying at 60-80 DEG C to obtain the N-hydroxyl tetrachlorophthalimide free radical initiator. According to the method, the adopted raw materials are simple, the conditions are easy to control, the preparation technology is green and environmentally friendly, the preparation repeatability is good, the free radical initiator is used in the oxidation reaction, a high-purity and high-yield product can be obtained, and the product obtained after repeated use still has high separation yield and purity.
Chlorobenzene-pyridine compounds and application thereof
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Paragraph 0142; 0144; 0145; 0146, (2018/04/01)
The invention relates to chlorobenzene-pyridine compounds and an application thereof. The compounds can be used for preparing a Smoothened protein inhibitor and a drug for resisting adenocarcinoma andesophagus cancer and have the structure in the general formula (I) shown in the description, wherein X is selected from the structure shown in the description, R1 is selected from H or the structureshown in the description, and R2 is selected from the structure shown in the description.
Palladium-Catalyzed ortho-Selective C-H Chlorination of Benzamide Derivatives under Anodic Oxidation Conditions
Konishi, Miki,Tsuchida, Kazuya,Sano, Katsuya,Kochi, Takuya,Kakiuchi, Fumitoshi
, p. 8716 - 8724 (2017/08/23)
The palladium-catalyzed ortho-selective chlorination of N-quinolinylbenzamide derivatives with hydrochloric acid was achieved under anodic oxidation conditions. The use of 5,7-dichloro-8-quinolinyl group as directing group was effective for the selective