C–H arylation reactions through aniline activation catalysed by a PANI-g-C<sub>3</sub>N<sub>4</sub>-TiO<sub>2</sub> composite under visible light in aqueous medium
作者:Liang Wang、Jun Shen、Sen Yang、Wenjie Liu、Qun Chen、Mingyang He
DOI:10.1039/c8gc00012c
日期:——
composite was prepared and found to be efficient for radical C–H arylationreactions. The arylation process involved coupling of in situ generated aryl diazonium salts from aniline with heteroarenes, enol acetates or benzoquinones under visible light in aqueous medium or pure water. A broad range of substrates survived the reaction conditions to provide the desired products in moderate to good yields
制备了聚苯胺(聚苯胺)-gC 3 N 4 -TiO 2复合材料,发现它对自由基CHH芳基化反应有效。芳基化过程涉及在水性介质或纯水中在可见光下将苯胺的原位生成的芳基重氮盐与杂芳烃,烯醇乙酸酯或苯醌结合。各种各样的底物在反应条件下均能幸存,以中等至良好的产率提供所需的产物。还实现了放大(10 mmol)合成。该半导体光催化剂显示出良好的光催化性能和稳定性。循环研究表明,这种复合材料很容易被回收,连续十次运行后,催化活性略有下降。
L'ARYLATION DES QUINONES PAR LES SELS DE DIAZONIUM : II. SUR LA SYNTHÈSE DES 2,5-BISARYL-<i>p</i>-BENZOQUINONES
作者:P. Brassard、P. L'Écuyer
DOI:10.1139/v58-100
日期:1958.4.1
not available
不可用
Practical C−H Functionalization of Quinones with Boronic Acids
作者:Yuta Fujiwara、Victoriano Domingo、Ian B. Seiple、Ryan Gianatassio、Matthew Del Bel、Phil S. Baran
DOI:10.1021/ja111152z
日期:2011.3.16
quinones with several boronic acids has been developed. This scalable reaction proceeds readily at room temperature in an open flask using inexpensive reagents: catalytic silver(I) nitrate in the presence of a persulfate co-oxidant. The scope with respect to quinones is broad, with a variety of alkyl- and arylboronicacids undergoing efficient cross-coupling. The mechanism is presumed to proceed through
We discovered that anilines were suitable for the direct C–H arylation of benzoquinone in the presence of tert-butyl nitrite. This new reaction proceeds through the in situ formation of a diazonium hydroxide species. The coupling can be carried out at room temperature under neutral, additive-free, metal-free, and aqueous conditions, allowing an environmentally friendly procedure.
[EN] INDOLEAMINE 2,3-DIOXYGENASE (IDO) INHIBITORS<br/>[FR] INHIBITEURS DE LA INDOLEAMINE 2,3-DIOXYGENASE (IDO)
申请人:UNIV BRITISH COLUMBIA
公开号:WO2006005185A1
公开(公告)日:2006-01-19
Inhibitors of indoleamine 2,3-dioxygenase (IDO) are provided as are pharmaceutical compositions containing such inhibitors as well as the use of such inhibitors and compositions for the treatment of a condition in a mammalian subject characterized by pathology of the IDO-mediated tryptophan metabolic pathway. Such conditions may involve suppression of T-cell mediated immune response or may directly result from depletion of tryptophan or accumulation of a product of tryptophan degradation. Specific disease conditions include cataracts, age-related yellowing in the eye, neurodegenerative disorders, mood disorders, cancer and various bacteria/viral infections. IDO inhibitors of this invention are substituted naphthalene and anthracene diones. Novel compounds of this invention include the following taurine-substituted naphthaquinone structure.