Pyrazoles: ‘one-pot’ synthesis from arenes and carboxylic acids
作者:Jung Keun Kim、Ming Gong、Elvira A. Shokova、Viktor A. Tafeenko、Olga V. Kovaleva、Yangjie Wu、Vladimir V. Kovalev
DOI:10.1039/d0ob01228a
日期:——
A rapid and efficient method for ‘one-pot’ synthesis of pyrazoles from (hetero)arenes and carboxylic acids via successive formation of ketones and β-diketones followed by heterocyclization with hydrazine has been developed. The utility of the RCOOH/TfOH/TFAA acylation system for intermediate production of ketones and 1,3-diketones is a key feature of this approach. The preliminary evaluation of the
A concise and efficient method for the synthesis of alkynyl/benzoyl-functionalized quinolines through TfOH-promoted cascade 1,4-conjugate addition/intramolecular annulation/aromatization process is established.
A 1,3-diketone derivative represented by the general formula (I)
wherein R1 denotes C1-C5 alkyl group; a phenyl group or a phenyl group substituted with halogen atom, C1-C5 alkyl group, C1-C5 alkoxy group; R2 denotes a phenyl group; a phenyl group substituted with 1 to 3 groups selected from the group consisting of a halogen atom, C1-C5 alkyl group, an C1-C5 alkoxy group, a phenyl group, a phenoxy group, and a benzyloxy group optionally having a halogen atom as a substituent on the phenyl ring; naphthyl group; a furyl group; a thienyl group; or a pyridyl group; provided that when R2 is a phenyl group R' is a group otherthan a methyl or phenyl group; and R denotes a hydrogen atom, a methyl group, and a phenyl group and a pharmaceutical composition containing the same as active ingredient.
Substituted quinolone compounds and compositions are provided along with methods for the use of those compounds in the treatment of diseases and disorders such as cancer.
提供了取代的喹诺酮化合物和组合物,以及使用这些化合物治疗癌症等疾病的方法。
Estes; Tockman, Transactions of the Kentucky Academy of Science, 1950, vol. 13, p. 265,269