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Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines

Jose Elguero ; Instituto de Quimica Medica, C.S.I.C., Juan de la ,Cierva 3, 28006 Madrid, Spain
Antonio de la Hoz ; Departamento de Quimica Organica, Facultad de Quimica, Universidad Complutense, 28040 Madrid, Spain
Carmen Pardo ; Departamento de Quimica Organica, Facultad de Quimica, Universidad Complutense, 28040 Madrid, Spain

Puni tekst: engleski, pdf (3 MB) str. 153-163 preuzimanja: 91* citiraj
APA 6th Edition
Elguero, J., de la Hoz, A. i Pardo, C. (1986). Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines. Croatica Chemica Acta, 59 (1), 153-163. Preuzeto s https://hrcak.srce.hr/177584
MLA 8th Edition
Elguero, Jose, et al. "Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines." Croatica Chemica Acta, vol. 59, br. 1, 1986, str. 153-163. https://hrcak.srce.hr/177584. Citirano 21.06.2021.
Chicago 17th Edition
Elguero, Jose, Antonio de la Hoz i Carmen Pardo. "Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines." Croatica Chemica Acta 59, br. 1 (1986): 153-163. https://hrcak.srce.hr/177584
Harvard
Elguero, J., de la Hoz, A., i Pardo, C. (1986). 'Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines', Croatica Chemica Acta, 59(1), str. 153-163. Preuzeto s: https://hrcak.srce.hr/177584 (Datum pristupa: 21.06.2021.)
Vancouver
Elguero J, de la Hoz A, Pardo C. Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines. Croatica Chemica Acta [Internet]. 1986 [pristupljeno 21.06.2021.];59(1):153-163. Dostupno na: https://hrcak.srce.hr/177584
IEEE
J. Elguero, A. de la Hoz i C. Pardo, "Base-Catalyzed Rearrangement of 2- Vinylpyrazolium Salts into 1,2- Dihydropyrimidines", Croatica Chemica Acta, vol.59, br. 1, str. 153-163, 1986. [Online]. Dostupno na: https://hrcak.srce.hr/177584. [Citirano: 21.06.2021.]

Sažetak
The ring transformation of 2-viny1pyrazolium salts into dihydropyrimidines is the last step of a process which starts from
neutra1 pyrazoles. Globally,it results in the insertion of a :'CE-
-CHOH-E (E = C02Me) fragment between the two nitrogen atoms of a l-substituted pyrazole. The dihydropyrimidines formed were identified spectroscopically (iH and i3C NMR) and the relative configuration of the two chiral centres established by the X-ray structure analysis of a picrate. Finally, a plausible mechanism for the formation and epimerization of dihydropyrimidines is proposed.

Hrčak ID: 177584

URI
https://hrcak.srce.hr/177584

Posjeta: 167 *