The author of 《Visible-light-induced metal and reagent-free oxidative coupling of sp2 C-H bonds with organo-dichalcogenides: synthesis of 3-organochalcogenyl indoles》 were Rathore, Vandana; Kumar, Sangit. And the article was published in Green Chemistry in 2019. Product Details of 399-52-0 The author mentioned the following in the article:
An unique visible-light-induced method for the organochalcogenation of the sp2 C-H bonds of indoles and aniline was presented using diaryl dichalcogenides (S, Se and Te) and oxygen as an oxidant avoiding a photocatalyst, base, catalyst and reagent in acetone at room temperature This benign protocol allowed one to accessed a wide range of 3-arylselenylindoles, 3-arylthioindoles and even 3-aryltelluroindoles with good to excellent yields. Various functionalities namely, methoxy and halo either on indoles or aryl dichalcogenides showed amenability to the developed reaction. Furthermore, thiocyanation of the sp2 C-H bonds of indoles were accomplished by this visible light induced method. A mechanistic understanding by UV-visible, EPR spectroscopy and cyclic voltammetry suggested that light induced electron transfer from the electron rich arene to oxygen providing an arene radical cation and a superoxide radical anion. Subsequently, reaction of the radical cation with aryl dichalcogenides provided a diaryl chalcogenyl cation which upon removal of protons gave unsym. 3-indolyl aryl chalcogenides. In the part of experimental materials, we found many familiar compounds, such as 5-Fluoro-1H-indole(cas: 399-52-0Product Details of 399-52-0)
5-Fluoro-1H-indole(cas: 399-52-0) is a member of aromaticfluorinated building blocks. Fluorine-containing aromatics have been incorporated into crop-protection chemicals (herbicides, insecticides, fungicides). Liquid crystals, positron emission tomography, and imaging systems represent new areas where fluoroaromatics and fluoroheterocyclics have gained attention.Product Details of 399-52-0
Referemce:
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