Synthesis and some transformations of methyl [4-(oxoacetyl)phenyl]carbamate
- Авторы: Velikorodov A.V.1, Shustova E.A.1
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Учреждения:
- Astrakhan State University
- Выпуск: Том 53, № 1 (2017)
- Страницы: 82-85
- Раздел: Article
- URL: https://journal-vniispk.ru/1070-4280/article/view/215642
- DOI: https://doi.org/10.1134/S1070428017010146
- ID: 215642
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Аннотация
The oxidation of methyl (4-acetylphenyl)carbamate with selenium dioxide in dioxane–water (30: 1) gave methyl [4-(oxoacetyl)phenyl]carbamate whose condensation with ethyl acetoacetate or diethyl malonate and hydrazine hydrate afforded ethyl 3-methyl-6-[4-(methoxycarbonylamino)phenyl]pyridazine-4-carboxylate and methyl {4-[5-(hydrazinecarbonyl)-6-oxo-1,6-dihydropyridazin-3-yl]phenyl}carbamate, respectively. The reaction of methyl [4-(oxoacetyl)phenyl]carbamate with o-phenylenediamine in dimethylformamide–ethanol on heating led to the formation of methyl [4-(quinoxalin-2-yl)phenyl]carbamate. Methyl {4-(5,7-dioxo- 4,4a,5,6,7,8-hexahydropyrimido[4,5-c]pyridazin-3-yl)phenyl}carbamate and methyl {4-(5-oxo-7-sulfanylidene- 4,4a,5,6,7,8-hexahydropyrimido[4,5-c]pyridazin-3-yl)phenyl}carbamate were synthesized by reactions of methyl [4-(oxoacetyl)phenyl]carbamate with barbituric and thiobarbituric acids, respectively, and hydrazine hydrate in the presence of zirconyl chloride octahydrate at room temperature.
Об авторах
A. Velikorodov
Astrakhan State University
Автор, ответственный за переписку.
Email: avelikorodov@mail.ru
Россия, pl. Shaumyana 1, Astrakhan, 414000
E. Shustova
Astrakhan State University
Email: avelikorodov@mail.ru
Россия, pl. Shaumyana 1, Astrakhan, 414000
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