Iron-Catalyzed Nitrene Transfer Reaction of 4-Hydroxystilbenes with Aryl Azides: Synthesis of Imines via C═C Bond Cleavage
作者:Yi Peng、Yan-Hui Fan、Si-Yuan Li、Bin Li、Jing Xue、Qing-Hai Deng
DOI:10.1021/acs.orglett.9b03160
日期:2019.10.18
C═C bond breaking to access the C═N bond remains an underdeveloped area. A new protocol for C═C bond cleavage of alkenes under nonoxidative conditions to produce imines via an iron-catalyzed nitrene transfer reaction of 4-hydroxystilbenes with aryl azides is reported. The success of various sequential one-pot reactions reveals that the good compatibility of this method makes it very attractive for
Room-Temperature Copper-Catalyzed Carbon-Nitrogen Coupling of Aryl Iodides and Bromides Promoted by Organic Ionic Bases
作者:Chu-Ting Yang、Yao Fu、Yao-Bing Huang、Jun Yi、Qing-Xiang Guo、Lei Liu
DOI:10.1002/anie.200903158
日期:2009.9.21
solubility alone does not explain the performance of organic ionic bases in the room‐temperature coupling of aryl iodides and even bromides with aliphatic and aromatic amines and N‐heterocycles (NuH; see scheme). Conductivity measurements show that these organic ionic bases, which contain tetraalkylammonium or ‐phosphonium cations, are readily ionized in organic solvents.
Ligand-free CuSO4-Catalyzed C-N Coupling Reaction of Aryl Halides with Alkylamines or N-heterocycles in Aqueous Solution System
作者:Hua Yang、Xiuli Zhang、Jingyu Si
DOI:10.14233/ajchem.2013.oh47
日期:——
during the repetitive use of these catalyst systems. Therefore, catalytic systems without ligands are of special interest. Cu(I)catalyzed C-Ncross-couplingreaction was reported using organic anion bases, such as quaternary ammonium hydroxide, which can contribute to form a homogeneous catalytic system. In present work, we report that C-N coupling reaction of aryl iodides and bromides with alkyl amines
CuI/Oxalic Diamide Catalyzed Coupling Reaction of (Hetero)Aryl Chlorides and Amines
作者:Wei Zhou、Mengyang Fan、Junli Yin、Yongwen Jiang、Dawei Ma
DOI:10.1021/jacs.5b08411
日期:2015.9.23
A class of oxalic diamides are found to be effective ligands for promoting CuI-catalyzed aryl amination with less reactive (hetero)aryl chlorides. The reaction proceeds at 120 °C with K3PO4 as the base in DMSO to afford a wide range of (hetero)aryl amines in good to excellent yields. The bis(N-aryl) substituted oxalamides are superior ligands to N-aryl-N'-alkyl substituted or bis(N-alkyl) substituted
发现一类草酸二酰胺是促进 CuI 催化的芳基胺化与反应性较低的(杂)芳基氯化物的有效配体。该反应在 120 °C 下以 K3PO4 作为碱在 DMSO 中进行,以良好到极好的收率提供范围广泛的(杂)芳基胺。双(N-芳基)取代的草酰胺是优于N-芳基-N'-烷基取代或双(N-烷基)取代的草酰胺的配体。配体中芳环的电子性质和空间性质对其效率都很重要。
Direct electrochemical reductive amination between aldehydes and amines with a H/D-donor solvent