Paul, Sulagna published the artcileIr-catalyzed functionalization of 2-substituted indoles at the 7-position: Nitrogen-directed aromatic borylation, Recommanded Product: 2-Methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole, the publication is Journal of the American Chemical Society (2006), 128(49), 15552-15553, database is CAplus and MEDLINE.
Ir-catalyzed borylation of 2-substituted indoles selectively yielded 7-borylated products, e.g., I (R = H, Cl or OMe) in good yields. N-Protection, required for previous functionalizations of 2-substituted indoles, was unnecessary.
Journal of the American Chemical Society published new progress about 919119-59-8. 919119-59-8 belongs to indole-building-block, auxiliary class Indole,Boronic acid and ester,Boronate Esters,Boronic Acids,Boronic acid and ester, name is 2-Methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole, and the molecular formula is C15H20BNO2, Recommanded Product: 2-Methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles