A Highly Active Cobalt Catalyst System for Kumada Biaryl Cross-Coupling
作者:Wenqin Wu、Hung Duong
DOI:10.1055/s-0037-1609337
日期:2018.6
A highlyactivecobaltcatalyst system has been developed for the cross-coupling reactions of arylmagnesium reagents and aryl bromides. In the presence of 1 mol% CoCl2, 2 mol% IPr·HCl and 2 mol% NaO t Bu, a wide range of (hetero)biaryls are prepared in 51–99% yields at room temperature within a short reaction time.
高活性钴催化剂体系已被开发用于芳基镁试剂和芳基溴化物的交叉偶联反应。在 1 mol% CoCl2、2 mol% IPr·HCl 和 2 mol% NaO t Bu 的存在下,在室温下短时间内反应时间可以以 51-99% 的产率制备多种(杂)联芳基化合物。
Nickel-catalyzed cross-coupling of aryltrimethylammonium triflates and amines
作者:Xue-Qi Zhang、Zhong-Xia Wang
DOI:10.1039/c3ob41989d
日期:——
Nickel-catalyzed cross-coupling of aryltrimethylammonium triflates and amines was carried out under mild conditions. The reaction has a broad scope of substrates and can be performed by a one-pot procedure from an aryldimethylamine.
Direct Borylation of Tertiary Anilines via C–N Bond Activation
作者:Zhi-Chao Cao、Xiao-Lei Li、Qin-Yu Luo、Huayi Fang、Zhang-Jie Shi
DOI:10.1021/acs.orglett.8b00545
日期:2018.4.6
The first successful catalytic borylation of unactivated aromatic C–N bonds of tertiary anilines without the preactivation or any directing groups is demonstrated. The reactivity of both N,N-dialkylarylamines and N-arylpyrroles were investigated systematically, and the targeted products were furnished in moderate to good yields. The DFT calculation results indicated that the catalytic cycle is furnished