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Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones

Nedjeljko Kujundžić ; Research Institute PLIVA, Zagreb, Croatia
Berislav Glunčić ; Research Institute PLIVA, Zagreb, Croatia

Puni tekst: engleski, pdf (11 MB) str. 599-606 preuzimanja: 221* citiraj
APA 6th Edition
Kujundžić, N. i Glunčić, B. (1991). Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones. Croatica Chemica Acta, 64 (4), 599-606. Preuzeto s https://hrcak.srce.hr/137265
MLA 8th Edition
Kujundžić, Nedjeljko i Berislav Glunčić. "Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones." Croatica Chemica Acta, vol. 64, br. 4, 1991, str. 599-606. https://hrcak.srce.hr/137265. Citirano 01.03.2021.
Chicago 17th Edition
Kujundžić, Nedjeljko i Berislav Glunčić. "Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones." Croatica Chemica Acta 64, br. 4 (1991): 599-606. https://hrcak.srce.hr/137265
Harvard
Kujundžić, N., i Glunčić, B. (1991). 'Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones', Croatica Chemica Acta, 64(4), str. 599-606. Preuzeto s: https://hrcak.srce.hr/137265 (Datum pristupa: 01.03.2021.)
Vancouver
Kujundžić N, Glunčić B. Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones. Croatica Chemica Acta [Internet]. 1991 [pristupljeno 01.03.2021.];64(4):599-606. Dostupno na: https://hrcak.srce.hr/137265
IEEE
N. Kujundžić i B. Glunčić, "Synthesis of 8-Methyl-1,2,3,4-tetrahydropyrido-[3,4-d]pyrimidine-2,4-diones", Croatica Chemica Acta, vol.64, br. 4, str. 599-606, 1991. [Online]. Dostupno na: https://hrcak.srce.hr/137265. [Citirano: 01.03.2021.]

Sažetak
A new method is described for the preparation of 8-methyl-1,2,3,4-tet- rahydropyrido[3,4-d]pyrimidine-2,4-diones 4, and 4-imino-8-methyl-l,2,3,4- -tetrahydropyrido[3,4-d]pyrimidine-2-ones, 3, starting from 4-methyl-5-oxa- zolylureas 1 and substituted olefins.
A plausible mechanism is proposed with a Diels-Alder adduct from the reagents as an intermediate that aromatizes by losing water to yield compounds 3. The latter give the title compounds 4 after hydrolysis.

Hrčak ID: 137265

URI
https://hrcak.srce.hr/137265

Posjeta: 329 *