Autoxidation of 5,6-dihydroxyindole-2-carboxylic acid (1) in the presence of metal ions, e.g. Co2+, leads to a mixture of oligomers, the major of which has been isolated as the acetyl and methyl ester derivative and identified as 5,6,5′,6′-tetraacetoxy-2,2′-dicarbomethoxy-4,4′-biindolyl (2).

Isolation of a new intermediate in the oxidative conversion of 5,6-dihydroxyindole-2-carboxylic acid to melanin / P., Palumbo; D'Ischia, Marco; Crescenzi, Orlando; Prota, Giuseppe. - In: TETRAHEDRON LETTERS. - ISSN 0040-4039. - STAMPA. - 28:4(1987), pp. 467-470. [10.1016/S0040-4039(00)95758-7]

Isolation of a new intermediate in the oxidative conversion of 5,6-dihydroxyindole-2-carboxylic acid to melanin.

D'ISCHIA, MARCO;CRESCENZI, ORLANDO;PROTA, GIUSEPPE
1987

Abstract

Autoxidation of 5,6-dihydroxyindole-2-carboxylic acid (1) in the presence of metal ions, e.g. Co2+, leads to a mixture of oligomers, the major of which has been isolated as the acetyl and methyl ester derivative and identified as 5,6,5′,6′-tetraacetoxy-2,2′-dicarbomethoxy-4,4′-biindolyl (2).
1987
Isolation of a new intermediate in the oxidative conversion of 5,6-dihydroxyindole-2-carboxylic acid to melanin / P., Palumbo; D'Ischia, Marco; Crescenzi, Orlando; Prota, Giuseppe. - In: TETRAHEDRON LETTERS. - ISSN 0040-4039. - STAMPA. - 28:4(1987), pp. 467-470. [10.1016/S0040-4039(00)95758-7]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/142236
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