Die Reaktionen der 4-Hydroxy-2-oxo-2H-chromen-3-carboxaldehyde 2 mit den Enaminen 3-6 fiihren in Abhangigkeit von der Struktur des Enamins entweder zu den Pyridol3,4-cl-curnarinen 16 oder zu den 3-(2-Hydroxybenzoyl)-2H-pyridonen 20-22
β¦ LIBER β¦
Reaktionen an Heterocyclen mit 2-Acyl-2-propenon-Teilstruktur, 2. Mitt.1,2) Pyrido[2,3-d]pyrimidine aus 4-Oxo-4H-chromen-3-carboxaldehyden und 4-Aminouracilen
β Scribed by Dieter Heber
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 383 KB
- Volume
- 316
- Category
- Article
- ISSN
- 0365-6233
No coin nor oath required. For personal study only.
β¦ Synopsis
Reactions of Heterocycles
Containing a 2-Acyl-2-propenone Structure, II: Pyrido[2,3-4pyrimidines from 4-0~0-4Schromene-3-carbaldehydes and 4-Aminonraciles Depending on the solvent, 4-0~0-4H-chromene-3-carbaldehydes 1 react with 4-aminouraciles 2,6 and 10 to yield pyrido[2,3-d]pyrimidines of different structures. In dipolar aprotonic solvents the 6H-[l]benzopyrano[3,4-g]pyrido[2,3-d]pyrimidines 4 and 8 are formed. In hot glacial acetic acid the 6-(2-hydroxybenzoyl)pyrido[2,3-d]pyrimidines 5, 9 and 14 are obtained.
π SIMILAR VOLUMES
Reaktionen an Heterocyclen mit 2-Acyl-2-
β
Dieter Heber
π
Article
π
1987
π
John Wiley and Sons
π
English
β 316 KB
π 2 views
Reaktionen an Heterocyclen mit 2-Acyl-2-
β
Dieter Heber
π
Article
π
1987
π
John Wiley and Sons
π
English
β 275 KB
π 1 views
Reaktionen an Heterocyclen mit 2-Acyl-2-
β
Dieter Heber
π
Article
π
1987
π
John Wiley and Sons
π
English
β 309 KB
π 1 views
Reaktionen an Heterocyclen mit 2-Acyl-2-
β
Dieter Heber
π
Article
π
1987
π
John Wiley and Sons
π
English
β 251 KB
π 2 views
Untersuchungen an 1,3-Thiazinen, 13. Mit
β
Wolfgang Hanefeld
π
Article
π
1980
π
John Wiley and Sons
π
English
β 366 KB
Heterocyclen via Mannichbasen, 7. Mitt.
β
Hans JΓΌrgen Klein; Reinhard TroschΓΌtz; Hermann J. Roth
π
Article
π
1985
π
John Wiley and Sons
π
English
β 344 KB