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Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines

Hassan M. Faid-Allah ; Department of Chemistry, Faculty of Science, University of Alexandria, Egypt

Puni tekst: engleski, pdf (6 MB) str. 717-733 preuzimanja: 114* citiraj
APA 6th Edition
Faid-Allah, H.M. (1987). Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines. Croatica Chemica Acta, 60 (4), 717-733. Preuzeto s https://hrcak.srce.hr/176399
MLA 8th Edition
Faid-Allah, Hassan M.. "Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines." Croatica Chemica Acta, vol. 60, br. 4, 1987, str. 717-733. https://hrcak.srce.hr/176399. Citirano 08.03.2021.
Chicago 17th Edition
Faid-Allah, Hassan M.. "Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines." Croatica Chemica Acta 60, br. 4 (1987): 717-733. https://hrcak.srce.hr/176399
Harvard
Faid-Allah, H.M. (1987). 'Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines', Croatica Chemica Acta, 60(4), str. 717-733. Preuzeto s: https://hrcak.srce.hr/176399 (Datum pristupa: 08.03.2021.)
Vancouver
Faid-Allah HM. Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines. Croatica Chemica Acta [Internet]. 1987 [pristupljeno 08.03.2021.];60(4):717-733. Dostupno na: https://hrcak.srce.hr/176399
IEEE
H.M. Faid-Allah, "Synthesis of Pyridones and Dihydropyridines from Pyrylium Salts and Nitriles from Adimines", Croatica Chemica Acta, vol.60, br. 4, str. 717-733, 1987. [Online]. Dostupno na: https://hrcak.srce.hr/176399. [Citirano: 08.03.2021.]

Sažetak
The 4,5,6-triphenyl-2-pyrone I was readily converted to the pyrylium salts II, which und er the influence of sodium ethoxide afforded the pyridones III. 4,5,6-Triphenylpyran-2-imine IVa, prepared from I ar Ila, was rearranged by sodium ethoxide to the isomeric 2-pyridone Ilia. Bromination of III yielded the 3-bromo- 12-pyridones V. Condensation of the aminopyridone VI with aldehydes afforded the aldimine derivatives VIn which on thermolysis formed the nitriles X and the pyridone IX. Reaction of the pyridine- 2-thiones XIV with benzyl chloride and ethyl chloroacetate afforded the chlorides XVI and XX, respectively. XX were readily converted to the dihydropyridines XXIII through the zwitterions XXI. Structures were confirmed by spectral data.

Hrčak ID: 176399

URI
https://hrcak.srce.hr/176399

Posjeta: 205 *