A General and Special Catalyst for Suzuki-Miyaura Coupling Processes
作者:Wenjun Tang、Andrew G. Capacci、Xudong Wei、Wenjie Li、Andre White、Nitinchandra D. Patel、Jolaine Savoie、Joe J. Gao、Sonia Rodriguez、Bo Qu、Nizar Haddad、Bruce Z. Lu、Dhileepkumar Krishnamurthy、Nathan K. Yee、Chris H. Senanayake
DOI:10.1002/anie.201002404
日期:2010.8.9
Biaryl monophosphorus ligands containing a 2,3‐dihydrobenzo[d][1,3]oxaphosphole framework are highly effective for the palladium‐catalyzed Suzuki–Miyaura cross‐coupling reactions of a wide range of substrates. Ligand 1 has demonstrated excellent performance for coupling reactions of extremely hindered arylboronic acids.
含有2,3-二氢苯并[ d ] [1,3]恶唑骨架的联芳基单磷配体对于钯催化的多种底物的Suzuki-Miyaura交叉偶联反应非常有效。配体1已显示出极受阻碍的芳基硼酸偶联反应的优异性能。
Pd-PEPPSI-IPent: Low-Temperature Negishi Cross-Coupling for the Preparation of Highly Functionalized, Tetra-ortho-Substituted Biaryls
作者:Selçuk Çalimsiz、Mahmoud Sayah、Debasis Mallik、Michael G. Organ
DOI:10.1002/anie.200906811
日期:2010.3.8
Cool couplings: Complex, hindered biaryls have been prepared at temperatures ranging from 0°C to room temperature, or with gentle heating. The Pd‐PEPPSI‐IPent catalyst (see scheme) nicely couples starting materials containing acidic moieties and routinely prepares biaryl derivatives where one or both rings comprising the biaryl are heterocyclic. Ar1=hindered aryl or heteroaryl, Ar2=unactivated aryl
[Pd(IPr*)(cinnamyl)Cl]: An Efficient Pre-catalyst for the Preparation of Tetra-ortho-substituted Biaryls by Suzuki-Miyaura Cross-Coupling
作者:Anthony Chartoire、Mathieu Lesieur、Laura Falivene、Alexandra M. Z. Slawin、Luigi Cavallo、Catherine S. J. Cazin、Steven P. Nolan
DOI:10.1002/chem.201104009
日期:2012.4.10
better: The new well‐defined [Pd(IPr*)(cin)Cl] pre‐catalyst is described (see scheme). This complex proves to be highlyactive in the Suzuki–Miyaura cross‐coupling for the synthesis of tetra‐ortho‐substituted biaryls under mild conditions. IPr* is reported as the largest N‐heterocycliccarbene (NHC) to date for [Pd(NHC)(cin)Cl] complexes, explaining the high reactivity observed for this complex in this challenging