84531-07-7Relevant articles and documents
Reactions of Formylchromone Derivatives. Part 5. Transformations of 3-Formylchromones into Pyrroles and Pyridines
Clarke, Paul D.,Fitton, Alan O.,Kosmirak, Mario,Suschitzky, Hans,Suschitzky, John L.
, p. 1747 - 1756 (2007/10/02)
4-Oxo-4H-1-benzopyran-3-carbaldehyde (3-formylchromone) (1) was treated with various bifunctional nucleophiles.With ethyl aminoethanoate it gave a mixture of ethyl 4-(2-hydroxybenzoyl)-6-(4-oxo-4H-1-benzopyran-3-yl)pyridine-2-carboxylate (2) and ethyl 4-(