Molecular rearrangement in polyphosphoric acid I. Formation of 1, 2-dihydro-2-phenylimino-4H-3, 1-benzoxazin-4-one and rearrangement to 3-phenyl-2, 4 (1H, 3H)-quinazolinedione in polyphosphoric acid.
β Scribed by Masaru Kurihara; Naoya Yoda
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- French
- Weight
- 413 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
Substituted 3-hydroxyquinoline-2,4(1H,3H )-diones 3 were transformed into 3-acyloxy-1,3-dihydro-2H-indol-2-ones 4 and isomeric 4-acyl-1,4-dihydro-3,1-benzoxazin-2-ones 5. The influence of the substituents and the reaction conditions on the course of the reaction was studied. In the proposed mechanis
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