Efficient ligand-free nickel-catalyzed C–S cross-coupling of thiols with aryl iodides
摘要:
NiCl2 center dot 6H(2)O efficiently catalyzes the C-S bond formation by the cross-coupling of aryl iodides with thiols in tetrabutylammonium bromide (TBAB) in excellent yield. The reaction functions in air and the NiLn-TBAB can be recovered and recycled without the loss of activity. (c) 2008 Elsevier Ltd. All rights reserved.
Nickel(II) N‐Heterocyclic Carbene Complexes: Versatile Catalysts for C–C, C–S and C–N Coupling Reactions
作者:Lourdes Benítez Junquera、Francys E. Fernández、M. Carmen Puerta、Pedro Valerga
DOI:10.1002/ejic.201700057
日期:2017.5.18
A variety of Ni(II) complexes with a wide range of electronic and steric properties, bearing picolyl-imidazolidene ligands (a-g) and Cp (2a-f) or Cp* (3a,c,g) groups, have been synthesised and characterised using NMR and single crystal X-ray crystallography. The complexes have been used as precatalysts for a wide range of catalytic transformations most likely involving a Ni0/NiII catalytic cycle. In
Well‐Defined Allylnickel Chloride/N‐Heterocyclic Carbene [(NHC)Ni(allyl)Cl] Complexes as Highly Active Precatalysts for CN and CS Cross‐Coupling Reactions
作者:María José Iglesias、Auxiliadora Prieto、M. Carmen Nicasio
DOI:10.1002/adsc.201000223
日期:2010.10.9
The roomtemperatureBuchwald–Hartwig amination of heteroaromatic chlorides has been achieved using the sterically bulky allylnickel chloride/N-heterocyclic carbene [(IPr)Ni(allyl)Cl] complex as a well-defined precatalyst. Arylation of aromatic thiols, affording high yields of products under lowcatalystloadings, has also been promoted with the same complex.
A highly efficient heterogeneous copper-catalyzed Chan-Lam coupling between thiols and arylboronic acids leading to diaryl sulfides under mild conditions
作者:Yang Lin、Mingzhong Cai、Zhiqiang Fang、Hong Zhao
DOI:10.1016/j.tet.2016.04.063
日期:2016.6
coupling reaction between thiols and arylboronicacids was achieved in EtOH at room temperature in the presence of 5 mol % of MCM-41-immobilized 1,10-phenanthroline-copper(II) complex [MCM-41-1,10-Phen-CuSO4] with n-Bu4NOH (40% aq) as base under O2 atmosphere, yielding a variety of unsymmetrical diaryl sulfides in good to excellent yields under mild and green conditions. The new heterogeneous copper complex
Achieving Nickel Catalyzed C–S Cross-Coupling under Mild Conditions Using Metal–Ligand Cooperativity
作者:Rina Sikari、Suman Sinha、Siuli Das、Anannya Saha、Gargi Chakraborty、Rakesh Mondal、Nanda D. Paul
DOI:10.1021/acs.joc.9b00075
日期:2019.4.5
thiols and (hetero)aryl halides under mild conditions, mostly at room temperature, catalyzed by well-defined singlet diradical Ni(II) catalysts bearing redox noninnocent ligands is reported. Taking advantage of ligand centered redox events, the high-energetic Ni(0)/Ni(II) or Ni(I)/Ni(III) redox steps were avoided in the catalyticcycle. The cooperative participation of both nickel and the coordinated ligands
<i> <scp>L</scp> </i>‐Proline‐Promoted CuI‐Catalyzed C‐S Bond Formation between Aryl Iodides and Thiols
作者:Hui Zhang、Weiguo Cao、Dawei Ma
DOI:10.1080/00397910600977533
日期:2007.1.1
Abstract An improved, mild procedure for the CuI‐catalyzed coupling reactions of aryl iodides with aliphatic and aromatic thiols, using L ‐proline as the ligand, is reported. This procedure is noteworthy given its high generality and exceptional level of functional group toleration.
摘要报道了一种使用 L-脯氨酸作为配体的 CuI 催化的芳基碘化物与脂肪族和芳香族硫醇的偶联反应的改进的温和程序。鉴于其高度的通用性和特殊的官能团耐受水平,该过程值得注意。