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Reactant for preparation of:• ;Inhibitors of HIV-1 attachment1• ;Prostanoid EP3 receptor antagonist, as a novel antiplatelet agent2• ;Indolyl-nitroalkanes via N-bromosuccinimide catalyzed synthesis3• ;Psilocybin as a medicinal agent4

In addition to its pharmaceutical applications, 4-Acetoxyindole is also employed in the synthesis of functional materials and organic electronics. Its distinctive properties enable it to be used in the development of dyes and pigments, enhancing the performance of various industrial products.

4-Acetoxyindole is a chromophore that belongs to the pyrrole family of compounds. It has been shown to react with an ionic liquid under acidic conditions to form a protonated intermediate, which can be deprotonated by a nucleophile. This reaction yields an acetate anion and a fluorescing product. 4-Acetoxyindole also reacts with deuterium gas, yielding an acetate, a deuterium atom, and fluorescing product. The reaction is reversible and the yield of the product depends on the concentration of the reactants. 4-Acetoxyindole has strong carbonyl groups that make it reactive towards other functional groups. These reactions are useful for synthesizing heterocycles such as indoles and isoquinolines.

4-Hydroxyindole (1 eq. of limiting reagent) was loaded into the vessel under N2, followed by DCM (dichloromethane; based on the loading of 4-hydroxyindole, 6 v/v). The reaction was cooled to 0-5 °C and pyridine (1.2 eq.) was added dropwise at 0-5 °C. Acet