Preparation of isatoic anhydrides
A process for the preparation of isatoic anhydrides of the formula where R1, R2, R3 and R4 are identical or different and each is hydrogen, alkyl, alkoxy, halogen, nitro, haloalkyl or haloalkoxy, by reacting an isatin of the formula where R1, R2, R3 and R4 have the stated meanings, with hydrogen per...
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| Zusammenfassung: | A process for the preparation of isatoic anhydrides of the formula where R1, R2, R3 and R4 are identical or different and each is hydrogen, alkyl, alkoxy, halogen, nitro, haloalkyl or haloalkoxy, by reacting an isatin of the formula where R1, R2, R3 and R4 have the stated meanings, with hydrogen peroxide in an acid medium. |
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