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Quinazolines. XII. Mannich Reactions of 4-Methyl Substituted Quinazolines 1

✍ Scribed by Siegle, John; Christensen, Bert E.

Book ID
121235949
Publisher
American Chemical Society
Year
1951
Tongue
English
Weight
306 KB
Volume
73
Category
Article
ISSN
0002-7863

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πŸ“œ SIMILAR VOLUMES

Vilsmeier and Mannich reactions on (4S)-
Vilsmeier and Mannich reactions on (4S)-N2-substituted 4-methyl-2,4-dihydro-1H-pyrazino[2,1-b]quinazoline-3,6-diones
✍ MarΓ­a Fernandez; MarΓ­a L. Heredia; Elena de la Cuesta; Carmen AvendaΓ±o πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 French βš– 351 KB

The enamine character of the CH2-C(lla)=N(ll) fragment in the title compounds was studied. Congxatmds I gave l-dimethylaminomethylene products $ after Vilsmeier reaction. The l-formyl derivatives, obtained by alkaline hydrolysis of 5, were isolated as enol tautome~s and were vea'y unstable in acid m