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On indigo. II. The ozonisation of indigo
Recueil des Travaux Chimiques des Pays-Bas, 1938AbstractWhen indigo is suspended in dry chloroform and treated with ozone an ozonide is formed, which can be decomposed with water when it furnishes isatin. The same result is obtained when dry ethyl acetate is used but when indigo is ozonised in wet ethyl acetate a quantitative yield of isatinic anhydride is obtained.
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