Synthesis and Structure ofas-Triazinoquinazolines, II
โ Scribed by Badawy, Mohamed A. ;Abdel-Hady, Sayed A. L. ;Eid, Mohga M. ;Ibrahim, Yehia A.
- Book ID
- 101816440
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1984
- Tongue
- English
- Weight
- 307 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0009-2940
No coin nor oath required. For personal study only.
โฆ Synopsis
4-Amino-3-(methylthio)-6-R-1,2,4-triazin-5(4H)-ones 6 -10 react with anthranilic acid to yield the l-amino-3-R-2H-as-triazino[3,2-blquinazoline-2,6(1H)-diones 17 -21 rather than the expected us-triazino[3,4-b I[ 1,3,4]benzotriazepines 12 -16. Compounds 17 -21 were deaminated into compounds 22-26. Heating of the N-benzylidene derivatives of 6-10 (27-31) with anthranilic acid also led to the formation of 22-26 with extrusion of benzonitrile. Synthese und Struktur von as-Triazinochinazolinen, 11 *) Die 4-Amino-3-(methylthio)-6-R-l,2,4-triazin-5(4H)-one 6 -10 ergaben bei der Umsetzung mit Anthranilsaure die l-Amino-3-R-2H-ac;-triazino[3,2-b]chinazolin-2,6(l~)-dione 17 -21 anstelle der erwarteten as-Triazino[3,4-b][1,3,4]benzotriazepine 12 -16. Die Verbindungen 17 -21 l i e k n sich zu 22 -26 desaminieren. Erhitzen der N-Benzylidenderivate von 6 -10 (27 -31) mit Anthranilsaure fuhrte unter Freisetzung von Benzonitril ebenfalls zu 22-26.
๐ SIMILAR VOLUMES
Selective syntheses of triazino [4,3-a]quinazolines 3ae and their isomeric triazino [3,2-b]quinazolines 4ae by cyclization of the appropriate a-keto acid hydrazones 2a-e under different reaction conditions are described. The angular triazinoquinazolines 3a-e were readily rearranged to the correspond