N , N '-双(噻吩-2-基甲基)草酰胺(BTMO)被发现是铜催化(杂)芳基卤化物(Br,I)原位硝化的有效配体,与钠发生偶联反应亚硝酸盐在 100–120 °C 下与 1–5 mol% CuI 和 BTMO 顺利进行。富电子底物是最好的偶联伙伴,可以在 100 °C 下以良好至优异的产率提供所需的偶联产物。电子中性基材需要在 120 °C 下加热才能完全转化,而在缺电子(杂)芳基溴的情况下观察到相当低的转化率。
Copper-Catalyzed Coupling Reaction of (Hetero)Aryl Chlorides and Amides
作者:Subhadip De、Junli Yin、Dawei Ma
DOI:10.1021/acs.orglett.7b02326
日期:2017.9.15
amide is established to be an effective catalyst system for Goldberg amidation with inferior reactive (hetero)aryl chlorides, which have not been efficiently documented by Cu-catalysis to date. The reaction is well liberalized toward a variety of functionalized (hetero)aryl chlorides and a wide range of aromatic and aliphatic primary amides in good to excellent yields. Furthermore, the arylation of
Cu 2 O / N,N'-双(噻吩-2-基甲基)草酰胺被确立为用较差的反应性(杂)芳基氯化物进行戈德堡酰胺化的有效催化剂体系,迄今为止,Cu催化还没有有效地证明这一点。 。反应很好地放宽了对各种官能化的(杂)芳基氯化物以及各种芳族和脂族伯酰胺的反应,收率非常好。此外,实现了内酰胺和恶唑烷酮的芳基化。本催化体系还完成了分子内的交叉偶联产物。
Cu/<i>N</i>,<i>N</i>′-Dibenzyloxalamide-Catalyzed <i>N</i>-Arylation of Heteroanilines
作者:Zhixiang Chen、Dawei Ma
DOI:10.1021/acs.orglett.9b02509
日期:2019.9.6
N,N'-Dibenzyloxalamide (DBO) was identified as a powerful ligand for promoting Cu-catalyzed coupling of heteroanilines with (hetero)aryl halides. For (hetero)arylchlorides, the coupling reaction occurred at 130 °C with 5 mol % CuBr and 10 mol % DBO. For (hetero)aryl bromides/iodides, coupling reaction took place at 80-100 °C with 1 mol % CuI and 2 mol % DBO. A variety of heteroanilines worked well
Room Temperature Cu-Catalyzed <i>N</i>-Arylation of Oxazolidinones and Amides with (Hetero)Aryl Iodides
作者:Subhajit Bhunia、Subhadip De、Dawei Ma
DOI:10.1021/acs.orglett.2c00122
日期:2022.2.11
an apposite promoter for the Cu-catalyzed N-arylation of oxazolidinones and primary and secondary amides with (hetero)aryliodides at room temperature. Excellent chemoselectivity reached between aryliodides and arylbromides, and a wide range of functional groups tolerated the reaction conditions, which led to the formation of greatly diverse N-arylation products.
N , N '-Bis(pyridin-2-ylmethyl)oxalamide (BPMO) 被发现是 Cu 催化的恶唑烷酮和伯胺和仲胺在室温下与(杂)芳基碘化物的N-芳基化的合适促进剂。芳基碘化物和芳基溴化物之间达到了优异的化学选择性,并且广泛的官能团可以耐受反应条件,从而导致形成多种多样的N-芳基化产物。
Cu‐Catalyzed Coupling Reactions of Sulfonamides with (Hetero)Aryl Chlorides/Bromides
作者:Qiaoli Li、Lanting Xu、Dawei Ma
DOI:10.1002/anie.202210483
日期:2022.10.24
of (hetero)aryl halides proceeds with excellent reaction scope by using oxalamides or 4-hydroxypicolinamides as the ligands. For bromides, only 2–5 mol % CuI and oxalamides were required. For chlorides, increasing catalytic loadings to 10 mol % Cu2O and ligands was needed. Direct sulfonamidation of four chloro-containing marketed drugs and preparation of two sulfonamide drugs were achieved under these
通过使用草酰胺或 4-羟基吡啶甲酰胺作为配体,Cu 催化的(杂)芳基卤化物磺酰胺化反应具有出色的反应范围。对于溴化物,仅需要 2–5 mol% CuI 和草酰胺。对于氯化物,需要将催化负载增加到 10 mol% Cu 2 O 和配体。在此条件下实现了四种含氯市售药物的直接磺酰胺化和两种磺胺类药物的制备。
Copper‐Catalyzed Carboxylation of Aryl Thianthrenium Salts with CO
<sub>2</sub>
作者:Shibiao Tang、Xiaobo Zhao、Lidong Yang、Bin Li、Baiquan Wang
DOI:10.1002/anie.202212975
日期:2022.11.21
An efficient copper-catalyzed carboxylation of aryl thianthrenium salts with carbon dioxide at room temperature has been developed. In combination with C−H thianthrenation, this work provides an efficient site-selective C−H carboxylation method, which may be used in the late-stage carboxylation modification of drug molecules.