Steric and Chelate Directing Effects in Aromatic Borylation
作者:Jian-Yang Cho、Carl N. Iverson、Milton R. Smith
DOI:10.1021/ja0013069
日期:2000.12.1
Jian-Yang Cho, Carl N. Iverson, and Milton R. Smith, III*Department of Chemistry, Michigan State UniVersityEast Lansing, Michigan 48824ReceiVed April 14, 2000ReVised Manuscript ReceiVed October 18, 2000Hydrocarbon activation has attracted considerable attentionbecause hydrocarbon feedstocks are ubiquitous.
Jan-Yang Cho, Carl N. Iverson, and Milton R. Smith, III*Department of Chemistry, Michigan State University East Lansing, Michigan 48824ReceiVed April 14, 2000Receive Manuscript Received 2000 年 10 月 18 日 碳氢化合物活化已引起相当多的关注,因为碳氢化合物的原料无处不在。
Nickel-Catalyzed C(sp<sup>2</sup>)–H Borylation of Arenes
作者:Arpan Das、Pradip Kumar Hota、Swadhin K. Mandal
DOI:10.1021/acs.organomet.9b00364
日期:2019.9.9
In this study, C(sp2)–Hborylation of arenes was accomplished by a nickel catalyst, resulting in good yield. Alkyl and alkoxy arenes were successfully functionalized, affording C(sp2)–H borylated compounds. It was unraveled that the well-defined abnormal N-heterocyclic carbene based Ni(II) complex breaks into Ni nanoparticles (Ni-NPs), which act as catalytically active species. A series of controlled
Well-defined iron bis(diphosphine) complexes are active catalysts for the dehydrogenativeC-Hborylation of aromatic and heteroaromatic derivatives with pinacolborane. The corresponding borylated compounds were isolated in moderate to good yields (25-73%) with a 5 mol% catalyst loading under UV irradiation (350 nm) at roomtemperature. Stoichiometric reactivity studies and isolation of an original tran
Herein, we report the iron-catalyzed borylation of arylethers and aryl amines via cleavage of C–O and C–N bonds. This protocol does not require the use of Grignard reagents and displays a broad substrate scope, which allows the late-stage borylation. It also provides facile access to multisubstituted arenes through C–H functionalization using 2-pyridyloxy as the directing group.