Synthesis of methyl substituted [5,6]- and [7,8]-fused pyridocoumarins via the iodine-catalyzed reaction of aminocoumarins with n-butyl vinyl ether
作者:Theodoros S. Symeonidis、Konstantinos E. Litinas
DOI:10.1016/j.tetlet.2013.09.089
日期:2013.11
pyridocoumarins are prepared from the Povarov-type, three-component reactions of 6- or 7-aminocoumarins with n-butylvinylether, catalyzed by iodine in refluxing acetonitrile, through the aza-Diels–Alder reaction of the initially formed N-iminoaminocoumarins with a second equivalent of the vinylether.
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