菲尔:科伦坡米廖雷罗,玛丽亚贝伦。Consejo Nacional de Investigaciones Cientificas y Tecnicas。Centro Cientifico Tecnologico Conicet - 拉普拉塔。Centro de Investigacion y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco"。拉普拉塔国立大学。Facultad de Ciencias Exactas。Centro de Investigacion y Desarrollo en Ciencias Aplicadas;阿根廷
Palladium-Catalyzed Carbonylation Reaction of Aryl Bromides with 2-Hydroxyacetophenones to Form Flavones
作者:Xiao-Feng Wu、Helfried Neumann、Matthias Beller
DOI:10.1002/chem.201202141
日期:2012.10.1
Flavone of the month: A general and efficient method for the palladium‐catalyzed carbonylativesynthesis of flavones has been developed (see scheme). Starting fromarylbromides and 2‐hydroxyacetophenones, the corresponding flavones have been isolated in good yields.
Synthesis and Antiviral Activity of 2-aryl-4H-chromen-4-one Derivatives Against Chikungunya Virus
作者:Vishnu N. Badavath、Surender S. Jadav、Boris Pastorino、Xavier de Lamballerie、Barij N. Sinha、Venkatesan Jayaprakash
DOI:10.2174/1570180813666160711163349
日期:2016.10.31
A series of nineteen 2-aryl-4H-chromen-4-one derivatives 2a-2s were synthesized and
evaluated for their antiviral activity against Chikungunya virus (LR2006_OPY1) in Vero cell culture
by CPE reduction assay. Three compounds 2a, 2b and 2g, were found to be active at concentration of
(IC50) 0.44 M, 0.45 M and 2.02 M, respectively. Compounds having heterocyclic ring 2a and 2b
at the 2nd position of the chromenone were found to be potent inhibitor of ChikV. Cytotoxicity studies
were performed using Vero cell culture, compounds 2a and 2b exhibited SI of 100. Molecular
docking simulation has been carried out to understand the possible mechanism of action.
The procedure consists of a sequence of some reactions including an arylation/decarboxylation cascade and proceeds well in aqueous media to afford biologically interesting flavones and 3-arylcoumarins. This method exhibited excellent selectivity and functional group tolerance under mild conditions. The reaction also showed perfect efficacy for the preparation of styryl coumarins.
使用K 2 S 2 O 8,实现了色农酮与芳基硼酸的高度区域选择性和无过渡金属的一锅芳基化反应。该程序由一系列反应组成,包括芳基化/脱羧级联,并在水性介质中进行得很好,从而提供了生物学上令人感兴趣的黄酮和3-芳基香豆素。该方法在温和条件下显示出极好的选择性和官能团耐受性。该反应还显示出制备苯乙烯基香豆素的完美功效。
Thallium(
<scp>III</scp>
)
<i>p</i>
‐tosylate‐mediated oxidative [1,2] rearrangement of
<scp>2‐naphthyl</scp>
and
<scp>2‐heteroarylchromanones</scp>
作者:Chidvilas Kurapati、Murugan Muthukrishnan、Om V. Singh、Rambabu Gundla
DOI:10.1002/jhet.4377
日期:2022.1
A practical and effective approach towards the synthesis of 3-heteroaryl-4H-chromen-4-ones by the oxidative [1,2] rearrangement of the respective 2-heteroaryl chroman-4-ones using thallium(III) p-tosylate is presented. The oxidative rearrangement of α- and β-naphthyl and thiophene substituents behaves like aryl groups; However, pyridyl substituents gave only dehydrogenated products.
通过使用对甲苯磺酸铊 (III)对各自的 2-杂芳基 chroman-4-ones 进行氧化 [1,2] 重排来合成 3-heteroaryl-4 H -chromen-4-ones的实用且有效的方法是提出了。α-和β-萘基和噻吩取代基的氧化重排表现得像芳基;然而,吡啶基取代基仅产生脱氢产物。