Phosphane-Free Copper-Catalyzed Decarboxylative Coupling of Alkynyl Carboxylic Acids with Aryl Halides under Aerobic Conditions
作者:Delin Pan、Chun Zhang、Shengtao Ding、Ning Jiao
DOI:10.1002/ejoc.201100659
日期:2011.7.18
A phosphane-free copper-catalyzed decarboxylativecross-coupling reaction of alkynyl carboxylicacids with aryl halides was developed. CuBr (1–5 mol-%) was used as a catalyst in the presence of a β-diketone ligand in air. The reactions of aryliodides were conducted in the absence of a Pd catalyst. The ligand plays a key role in this kind of copper catalysis. NaNO2 was disclosed to efficiently improve
Nickel-catalyzed oxidative decarboxylative coupling reactions between alkynyl carboxylic acids and arylboronic acids
作者:Ju-Hyeon Lee、Gabriel Charles Edwin Raja、Yujeong Son、Jisun Jang、Jimin Kim、Sunwoo Lee
DOI:10.1016/j.tetlet.2016.09.054
日期:2016.10
Nickel-catalyzed decarboxylative coupling reactions between aryl alkynyl carboxylic acids and arylboronicacids were developed. When aryl alkynyl carboxylic acids were reacted with arylboronicacids in the presence of NiCl2 (10 mol %), 2,2′-bipyridine (20 mol %), Na2CO3 (1.0 equiv), and Ag2CO3 (1.0 equiv) in DMF at 80 °C for 18 h, the corresponding diaryl alkynes products were formed in moderate to
开发了镍催化的芳基炔基羧酸和芳基硼酸之间的脱羧偶联反应。在NiCl 2(10 mol%),2,2'-联吡啶(20 mol%),Na 2 CO 3(1.0当量)和Ag 2 CO 3(1.0 )存在下,芳基炔基羧酸与芳基硼酸反应当量)在DMF中于80°C放置18 h,相应的二芳基炔烃产物以中等至良好的产率形成。
The catalytic Sonogashira couplingreaction of terminal alkynes and aryl halides is developed using copper(II) oxide nanoparticles as catalyst in dimethyl sulfoxide. The procedure is experimentally simple, general, efficient, and free from addition of external cocatalysts or chelating ligands. copper(II) oxide nanoparticles - Sonogashira coupling - ligand-free - nano catalyst
A Sustainable, User-Friendly Protocol for the Pd-Free Sonogashira Coupling Reaction
作者:Aggeliki A. Liori、Ioannis K. Stamatopoulos、Argyro T. Papastavrou、Afroditi Pinaka、Georgios C. Vougioukalakis
DOI:10.1002/ejoc.201800827
日期:2018.12.2
An efficient, user‐friendly protocol for the Pd‐free, Cu‐catalyzedSonogashiracross‐couplingreaction was developed. The (pre)catalytic species utilized are low‐cost, stable, and widely available: CuSO4·5H2O as the copper source, an NHC salt precursor, and K2CO3 as the base.
针对无钯,铜催化的Sonogashira交叉偶联反应,开发了一种高效,用户友好的方案。所使用的(预)催化物质成本低廉,稳定且可广泛获得:CuSO 4 · 5H 2 O作为铜源,NHC盐前体和K 2 CO 3作为碱。
One-pot synthesis of unsymmetrical diarylacetylenes via Sonogashira/deacetonation/Sonogashira cross-coupling of two different aryl chlorides with 2-methyl-3-butyn-2-ol
Synthesis of unsymmetrical diarylacetylenes via one-pot Sonogashira/Deacetonation/Sonogashira cross-coupling of two different aryl chlorides with 2-methyl-3-butyn-2-ol was developed.