7202-55-3Relevant academic research and scientific papers
Synthesis of functionalized pyrano[3,2-c]pyridines and their transformations to 4-hydroxy-3[(1E)-N-hydroxyalkanimidoyl]pyridones
El-Essawy, Farag A.,Khattab, Ahmed F.,Zahran, Magdy A.,Gomaa, Sherif H.
, p. 3225 - 3237 (2008/02/12)
Reaction of 4-hydroxy-6-methyl-2(1H)-pyridones 1a and 4-hydroxy-1,6- dimethyl-2(1H)-pyridones 1b with diethyl malonates 2a-e leads to the formation of pyrano[3,2-c]pyridines 4a-j. Degradation of 4a-i affords the corresponding ketones 6a-i. Condensation of ketones 6a-i with hydroxyl amine or phenyl hydrazine hydrochloride is described. Copyright Taylor & Francis Group, LLC.
Ring closure of 4-azido-3-formyl-(or acetyl-)2-pyridones to isoxazolo[4,3-c]pyridones
Khattab, Ahmed F.
, p. 393 - 395 (2007/10/03)
Azidation of the chlor aldehyde 2, which was obtained from the 4-hydroxy-2-pyridone 1, afforded the ring-closed isoxazolopyridone 3. Thermolysis of the 3-acetyl-4-azido-2-pyridone 8, which was obtained from the corresponding 4-tosyloxy derivative 7, affor
REACTION OF ETHYL β-ALKYLAMINOCROTONATES IN THE PRESENCE OF ORGANIC ACID
Yamato, Masatoshi,Sato, Koichi,Hashigaki, Kuniko,Ninomiya, Mayumi
, p. 1263 - 1268 (2007/10/02)
Condensation of ethyl β-alkylaminocrotonates, obtained from ethyl acetoacetate and amines, in the presence of 3-mercaptopropionic acid gave 1,6-naphthyridine-2,5-dione derivatives.The structures of these compounds were determined on the basis of several i
