A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Quality Control of: 5-Hydroxyindole, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1953-54-4, Name is 5-Hydroxyindole, molecular formula is C8H7NO. In a Article, authors is Zhu, Yi，once mentioned of 1953-54-4
A classical Friedel-Crafts alkylation of different indoles catalyzed by AlCl3·6H2O has been developed for a well-known important natural product, celastrol, resulting in a series of derivatives for further biological evaluation. The catalyst loading was reduced to 5 mol %, the reaction proceeds at ambient temperature and reaction time is only 3 h. The product yields range from 20% to 99%. A reaction mechanism is also proposed, based on our experiment results.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1953-54-4, help many people in the next few years.Quality Control of: 5-Hydroxyindole
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