265315-65-9Relevant articles and documents
General method for the preparation of substituted 2-amino-4H,5H-pyrano[4,3- b]pyran-5-ones and 2-Amino-4H-pyrano[3,2-c]pyridine-5-ones
Stoyanov, Edmont V.,Ivanov, Ivo C.,Heber, Dieter
, p. 19 - 32 (2007/10/03)
Reaction of 4-hydroxy-6-methyl-2-pyrone (1a) as well as 4-hydroxy-6-methyl-2(1H)-pyridones (1b-d) with arylmethylene malononitriles or arylmethylene methyl cyano-acetates (2a-h) leads to the formation of the very stable 5,6-fused bicyclic 2-amino-4H-pyran