247229-77-2Relevant academic research and scientific papers
Synthesis of substituted arylazobenzopyranopyrido-pyrimidine ring by condensation of malononitrile, 4-hydroxy-5-arylazo salicyl-aldehyde and ketones by means of ammonium acetate
Fadda,Etman,El-Desoky,Bondock
, p. 191 - 194 (2007/10/03)
Several new arylazo coumarinimide (4a-e) and/or benzopyrano[2,3- d]pyridopyrimidine (8a,9a,b) were prepared by the direct condensation malononitrile with 5-arylazo-4-hydroxysalicylaldehyde and ketones in the presence of ammonium acetate.
