Process for the preparation of indigo compounds

Details Process for the preparation of indigo compounds Process for the preparation of indigo compounds

C - Chemistry, Metallurgy

09

B

260/306.1

C09B 7/02 (2006.01) C09B 7/00 (2006.01)

Patent

CA 1334097

A process for the preparation of an indigo compound by reacting an indole compound having no substituent at the 2- and 3-positions with hydrogen peroxide in a liquid phase composed of at least two separate phases including an organic phase containing the indole compound and an aqueous phase containing hydrogen peroxide, or by reacting the indole compound with hydrogen peroxide in solution in an organic solvent.

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