Iridium(I)‐Catalyzed C−H Borylation in Air by Using Mechanochemistry
作者:Yadong Pang、Tatsuo Ishiyama、Koji Kubota、Hajime Ito
DOI:10.1002/chem.201900685
日期:2019.3.27
the first time to an iridium(I)‐catalyzed C−H borylation reaction. By using either none or just a catalytic amount of a liquid, the mechanochemical C−H borylation of a series of heteroaromatic compounds proceeded in air to afford the corresponding arylboronates in good‐to‐excellent yields. A one‐pot mechanochemical C−H borylation/Suzuki–Miyaura cross‐coupling sequence for the directsynthesis of 2‐aryl
Catalytic borylation of o-xylene and heteroarenes via C–H activation
作者:Kristin Mertins、Alexander Zapf、Matthias Beller
DOI:10.1016/s1381-1169(03)00470-9
日期:2004.1
Iridium and rhodium complexes catalyze the borylation of xylene and different heteroarenes using pinacolborane via C-H activation. Various five-membered heterocycles such as thiophene, pyrrole, thionaphthene, and indole derivatives yield the borylated products in moderate to good yields. In general, the reactions proceed with high selectivity to give borylation ortho to the heteroatom. (C) 2003 Elsevier B.V. All rights reserved.
US2014/256733
申请人:——
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公开(公告)日:——
Remarkably Efficient Iridium Catalysts for Directed C(sp<sup>2</sup>)–H and C(sp<sup>3</sup>)–H Borylation of Diverse Classes of Substrates
aliphatic substrates for selective C(sp3)–H bond borylations. Heterocyclic molecules are selectively borylated using the inherently elevated reactivity of the C–H bonds. A number of late-stage C–H functionalization have been described using the same catalysts. Furthermore, we show that one of the catalysts could be used even in open air for the C(sp2)–H and C(sp3)–Hborylations enabling the method more general