Ishiyama, Tatsuo published the artcileMild Iridium-Catalyzed Borylation of Arenes. High Turnover Numbers, Room Temperature Reactions, and Isolation of a Potential Intermediate, Safety of 2-(3-Bromo-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the publication is Journal of the American Chemical Society (2002), 124(3), 390-391, database is CAplus and MEDLINE.
The borylation of arenes leads to the formation of synthetically versatile products from unactivated arene reagents. It is reported that Ir(I) precursors in conjunction with bipyridine ligands catalyze in high yields the borylation of arenes under mild conditions. These reactions encompass arenes bearing both electron-withdrawing and electron-donating substituents. The temperatures required for the transformation are much lower than those previously reported for direct arene borylation. The combination of [Ir(COE)2Cl]2 and (4,4-di-t-butyl)bipyridine even allows for reaction at room temperature The same catalyst system at 100° provides remarkably high turnover numbers for a hydrocarbon functionalization process. Mechanistic studies show that the reactions involve uncommon, Ir(II) tris-boryl complexes. An example of this type of complex ligated by di-t-butylbipyridine, [Ir(COE)(Bpin)3(4,4′-di-t-Bu-BPY)], was isolated and structurally characterized. It reacted rapidly at room temperature to produce aryl boronate esters in high yields.
Journal of the American Chemical Society published new progress about 401797-04-4. 401797-04-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronate Esters,Boronic acid and ester, name is 2-(3-Bromo-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C13H18BBrO3, Safety of 2-(3-Bromo-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary