CAN-Catalyzed Regioselective Synthesis of Pyrido[2,3-c]carbazoles by the Povarov Reaction
作者:Rajagopal Nagarajan、Mayavan Viji
DOI:10.1055/s-0031-1289967
日期:2012.1
A simple route for the synthesis of 3-methyl-3H-pyrido[2,3-c]carbazoles via Povarov reaction of 3-aminocarbazoles, and ethyl vinyl ether is described. This transformation, catalyzed by cerium(IV) ammonium nitrate (CAN) under mild reaction conditions, provides the pyrido[2,3-c]carbazoles in good yields with high regioselectivity. Povarov reaction - annulations - heterocycles - Lewis acids - regioselectivity
描述了一种通过3-氨基咔唑与乙基乙烯基醚的Povarov反应合成3-甲基-3 H-吡啶并[2,3- c ]咔唑的简单方法。在温和的反应条件下,硝酸铈(IV)铵(CAN)催化的这种转化以高收率和高区域选择性提供了吡啶并[2,3- c ]咔唑。 Povarov反应-环空-杂环-路易斯酸-区域选择性
An Efficient Access to Heteroaryl/Aryl-Annulated Pyridine Derivatives and a Study of Their Mosquito Larvicidal Activity Against Dengue Vector
作者:Pamela Pal、Sayanti Show、Priya Roy、Tapas Ghosh、Raj K. Nandi、Sukanya Das、Sayantika Bhakta、Swarupa Mondal
DOI:10.1055/a-2251-1849
日期:——
convergent synthesis of heteroaryl/aryl-annulated pyridine and quinoline derivatives by a metal-free Povarov reaction. para-Toluene sulfonic acid was used as the catalyst in this reaction, which produced the products in good yields from the corresponding aromatic amines and ethyl vinyl ether. A pyridocoumarin and a pyridopyrimidine product were evaluated for their mosquitolarvicidalactivity against