Sonogashira Reaction of Aryl and Heteroaryl Halides with Terminal Alkynes Catalyzed by a Highly Efficient and Recyclable Nanosized MCM-41 Anchored Palladium Bipyridyl Complex
A heterogeneous catalyst, nanosized MCM-41-Pd, was used to catalyze the Sonogashira coupling of aryl and heteroaryl halides with terminal alkynes in the presence of CuI and triphenylphosphine. The coupling products were obtained in high yields using low Pd loadings to 0.01 mol%, and the nanosized MCM-41-Pd catalyst was recovered by centrifugation of the reaction solution and re-used in further runs without significant loss of reactivity.
Sulfonated N-Heterocyclic Carbenes for Pd-Catalyzed Sonogashira and Suzuki-Miyaura Coupling in Aqueous Solvents
作者:Sutapa Roy、Herbert Plenio
DOI:10.1002/adsc.200900886
日期:——
of the respective disulfonated N‐heterocyclic carbene (NHC) precursors in reasonable yields (46–77%). Water‐soluble palladium catalyst complexes, in situ obtained from the respective sulfonated imidazolinium salt, sodium tetrachloropalladate (Na2PdCl4) and potassium hydroxide (KOH) in water, were successfully applied in the copper‐free Sonogashiracoupling reaction in isopropyl alcohol/water mixtures
The authors acknowledge financial support from Ministerio de Ciencia e Innovacion (MICINN) of Spain (project numbers CTQ2007-65218, CTQ2009-07881/BQU and CTQ2011-24151/BQU), Consolider Ingenio 2010 (project CSD2007-00006), Generalitat de Catalunya (project SGR2009-01441), Generalitat Valenciana (PROMETEO/2009/039) and Fondo Europeo de Desarrollo Regional (FEDER). A. S. was supported through a Ramon
作者感谢西班牙国家科学与创新部长 (MICINN)(项目编号 CTQ2007-65218、CTQ2009-07881/BQU 和 CTQ2011-24151/BQU)、Consolider Ingenio 2010(项目 CSD2007-00006 de Generalitat)的财政支持项目 SGR2009-01441)、Generalitat Valenciana (PROMETEO/2009/039) 和 Fondo Europeo de Desarrollo Regional (FEDER)。AS 得到了西班牙教育和 Ciencia 部长 (MEC) 的 Ramon y Cajal 合同的支持;YM 感谢阿利坎特大学的 Instituto de Sintesis Organica (ISO) 提供的资助。
Diphenylphosphorylated PEG (DPPPEG) as a new support for generation of nano-Pd(0) as catalyst for carbon–carbon bond formation via copper-free Sonogashira and homocoupling reactions of aryl halides in PEG
作者:Nasser Iranpoor、Habib Firouzabadi、Asma Riazi
DOI:10.1007/s13738-014-0469-8
日期:2015.1
reaction mixture and centrifugations. Full characterization of the nano-Pd(0)/DPPPEG200 was performed by XRD spectra, UV–Vis spectra, and also by TEM image. This nano-complex was used as an efficient catalyst for copper-free Sonogashira and homocoupling reactions of aryl halides. The sonogashira reaction of aryl halides was conducted at 80 °C in PEG. However, the homocoupling reaction was performed at 100 °C
Oxine based unsymmetrical (O<sup>−</sup>, N, S/Se) pincer ligands and their palladium(<scp>ii</scp>) complexes: synthesis, structural aspects and applications as a catalyst in amine and copper-free Sonogashira coupling
作者:Satyendra Kumar、Fariha Saleem、Manish Kumar Mishra、Ajai K. Singh
DOI:10.1039/c7nj00067g
日期:——
L3 and L4. Upon reaction with Na2PdCl4/[Pd(CH3CN)2Cl2], L1–L4 coordinated as a (O−, N, E) donor (E = S/Se) resulting in complexes [Pd(L–H)Cl] (1–4; L = L1–L4). The molecular structures of L1, 1 and 2 were established by single crystal X-ray diffraction. The palladium in 1 and 2 has a nearly square planar geometry. The Pd–S bonddistance in 1 is 2.2648(14) Å and in 2, the Pd–Se bonddistance is 2.3641(7)