Garcia-Lopez, Jose-Antonio published the artcileUse of 2-Bromophenylboronic Esters as Benzyne Precursors in the Pd-Catalyzed Synthesis of Triphenylenes, Quality Control of 89694-44-0, the publication is Organic Letters (2014), 16(9), 2338-2341, database is CAplus and MEDLINE.
Ortho-Substituted aryl boronates, e.g., I (X= Br, OTf), are introduced as aryne precursors for transition-metal-catalyzed transformations. On treatment with tBuOK and Pd(0), metal-bound aryne intermediates are formed that undergo effective trimerization to form useful triphenylene compds, e.g., II. For meta-substituted arynes, the 3:1 product ratio in favor of non-C3 sym. material is indicative of a benzyne mechanism.
Organic Letters published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Quality Control of 89694-44-0.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary