73262-05-2Relevant articles and documents
Heterocyclic Systems. 8. Condensation Reactions of 4-Oxo-4H-benzopyran-3-carbonitrile
Ghosh, Chandrakanta,Tewari, Nimai
, p. 1964 - 1968 (2007/10/02)
Condensation reactions of 4-oxo-4H-benzopyran-3-carbonitriles (1; X=H, CH3, Cl, and Br) with 1,2-diamines, acetylglycine, and themselves have been investigated.The compounds 1 on being refluxed with ethylenediamine in ethanol give initially 1,4-additio