88301-40-0Relevant articles and documents
Method for preparing N-(3-acetyl-2-hydroxyphenyl)acetamide
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Paragraph 0036; 0042-0043; 0049; 0055-0056, (2019/07/04)
The invention relates to the technical field of organic synthesis and medicine, and provides a method for preparing N-(3-acetyl-2-hydroxyphenyl)acetamide. According to the method, 2-aminophenol is adopted as an initial raw material, amidogen acetylation and a methylation reaction of phenolic hydroxyl groups are firstly carried out, then bromination on benzene rings is carried out, acetyl is introduced, reductive debromination is finally carried out, a target product is obtained, and the total yield reaches up to 41.7%. In the process of generating a compound E through a compound D, the compound D is subjected to ether bond cracking, and can react with acetylchloride to generate phenolic ester, and then a rearrangement reaction occurs. According to the method, the raw material is wide in source and easy to obtain, the path can be industrialized easily, fewer impurities are generated, the yield is high, and the purity of the target product is effectively improved.
1,2,4-TRIAZINE-4-AMINE DERIVATIVES
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, (2011/09/14)
According to the invention there is provided a compound of formula A1 which may be useful in the treatment of a condition or disorder ameliorated by the inhibition of the A1- A2b or, particularly, the A2a receptor wherein the compound of formula A1 has the structure, wherein, A represents Cy1 or HetA; Cy1 represents a 5- to 14-membered aromatic, fully saturated or partially unsaturated carbocyclic ring system comprising one, two or three rings, which Cy1 group is optionally substituted by one or more R4a substituents; HetA represents a 5- to 14-membered heterocyclic group that may be aromatic, fully saturated or partially unsaturated, and which contains one or more heteroatoms selected from O, S and N, which heterocyclic group may comprise one, two or three rings and which HetA group is optionally substituted by one or more R4b substituents; B represents a Cy2 or HetB; Cy2 represents a 3- to 10-membered aromatic, fully saturated or partially unsaturated carbocyclic ring system comprising one or two rings, which Cy2 group is optionally substituted by one or more R4c substituents; HetB represents a 3- to 10-membered heterocyclic group that may be aromatic, fully saturated or partially unsaturated, and which contains one or more heteroatoms selected from O, S and N, which heterocyclic group may comprise one or two rings and which HetB group is optionally substituted by one or more R4d substituents.