PYRAZOLOQUINOLINONE DERIVATIVES, PREPARATION THEREOF AND THERAPEUTIC USE THEREOF
申请人:BENAZET ALEXANDRE
公开号:US20130079337A1
公开(公告)日:2013-03-28
The invention relates to compounds corresponding to formula (I)
in which R1, R2 and R3 are as defined in Claim
1
, and also to the process for preparing them and to their therapeutic use.
An Electrophilic Approach to the Palladium-Catalyzed Carbonylative C–H Functionalization of Heterocycles
作者:Jevgenijs Tjutrins、Bruce A. Arndtsen
DOI:10.1021/jacs.5b07098
日期:2015.9.23
highly electrophilic intermediates. Overall, this provides with an atom-economical and general synthetic route to generate aryl-(hetero)aryl ketones using stable reagents (aryl iodides and CO) and without the typical need to exploit pre-metalated heterocycles in carbonylativecoupling chemistry.
Ruthenium(II)-catalyzed Arylation of <i>ortho</i>-C–H Bonds in 2-Aroyl-imidazoles with Aryl Halides
作者:Chen-an Wang、Naoto Chatani
DOI:10.1246/cl.200886
日期:2021.4.5
The ruthenium(II)-catalyzed ortho-C−H arylation of 2-aroyl-imidazoles with aryl bromides and chloride is reported. An imidazole ring functions both as a masked ester and a directing group for C−H activation. A variety of functional groups are tolerated under the reaction conditions. The arylated final products could be easily converted into the corresponding esters and amide.
Light as air: A straightforward metal-free four-step one-pot synthetic strategy to access new high-value functionalized phthalazines was developed. Combining a facile light-mediated enolization of o-methyl benzophenones/Diels-Alder reaction domino process with a subsequent deprotection/aromatization domino reaction leads to waste-reducing and cost-effective synthesis of new antiviral model drugs.
intermolecular 1,2-diacylation of alkenes is disclosed via cooperative N-heterocyclic carbene and photoredox catalysis under the mediation of PPh3 and Cs2CO3. This protocol provides a practical approach for construction of 1,4-dicarbonyl compounds toward novel diketone and pharmaceutical derivatives. Furthermore, the regioselective dicarbonyl compounds can be synthesized by adding acyl azolium salt. Mechanistic
在PPh 3和Cs 2 CO 3的介导下,通过协同的N-杂环卡宾和光氧化还原催化烯烃的分子间1,2-二酰化被公开。该协议为向新型二酮和药物衍生物构建 1,4-二羰基化合物提供了一种实用的方法。此外,区域选择性二羰基化合物可以通过添加酰基唑鎓盐来合成。机理研究表明,该过程是酮基自由基与苄基 C-自由基的关键自由基/自由基交叉偶联。