A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 1912-47-6, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1912-47-6, Name is 2-(5-Methyl-1H-indol-3-yl)acetic acid, molecular formula is C11H11NO2. In a Patent, authors is ，once mentioned of 1912-47-6
The present invention provides a substituted indole – 3 – acetic acid synthesis method, comprises the following steps: (1) in order to replace the indole as the starting material, with the acylation reagent under the action of catalyst through the tutor – acylation to obtain the 1, 3 – diacetyl substituted indole; (2) intermediate 1, 3 – diacetyl substituted indole does not need refining, directly with the morpholine and sulfur by the Willgerodt – Kindler rearrangement reaction, the inorganic under the catalysis of alkali hydrolysis, acidified to obtain substituted indole – 3 – acetic acid. (by machine translation)
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Reference：
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles