Synthesis, crystal structure, and catalytic activity of bridged-bis(N-heterocyclic carbene) palladium(II) complexes in selective Mizoroki-Heck cross-coupling reactions
作者:Waseem Mansour、Rami Suleiman、Wissam Iali、Mohammed Fettouhi、Bassam El Ali
DOI:10.1016/j.poly.2021.115371
日期:2021.10
temperature range 25–120 °C. The catalyticactivities of three Pd-bridged bis(NHC) complexes in the Mizoroki-Heck cross-couplingreactions were not found to have a direct correlation with +I effect order of the N-substituents of the ligand. However, a direct correlation was found between the DFT calculated absolute softness of the three complexes with their respective catalyticactivity. The highest calculated
Postmodification Approach to Charge-Tagged 1,2,4-Triazole-Derived NHC Palladium(II) Complexes and Their Applications
作者:Van Ha Nguyen、Mansur B. Ibrahim、Waseem W. Mansour、Bassam M. El Ali、Han Vinh Huynh
DOI:10.1021/acs.organomet.7b00329
日期:2017.6.26
Charge-tagged bis(1,2,4-triazolin-5-ylidene)palladium(II) complexes have been successfully synthesized via a postmodification strategy. Reacting PdBr2 with bromo-functionalized 1,2,4-triazolium salts A·HBr and B·HBr in the presence of silver oxide afforded the bis(carbene)palladium(II) complexes trans-[PdBr2(A)2] (1a) and trans-[PdBr2(B)2] (1b), which contain tethered bromoalkyl chains. Subsequent
A highly active palladium(II)-bis(oxazoline) catalyst for Suzuki-Miyaura, Mizoroki-Heck and sonogashira coupling reactions in aqueous dimethylformamide
作者:Mansur B. Ibrahim、Bassam El Ali、Mohammed Fettouhi、Lahcène Ouahab
DOI:10.1002/aoc.3305
日期:2015.6
been investigated in dimethylformamide–water under aerobic and mild conditions in Suzuki–Miyaura coupling reactions of arylboronic acids with aryl iodides, aryl bromides and aryl chlorides, Mizoroki–Heck coupling reactions of aryl halides with styrene derivatives, and Sonogashira coupling reactions of aryl halides with terminal alkynes. A wide range of functional groups as substituents on the arylboronic
Synthesis of new surfactant-like triazine-functionalized ligands for Pd-catalyzed Heck and Sonogashira reactions in water
作者:Nasser Iranpoor、Sajjad Rahimi、Farhad Panahi
DOI:10.1039/c5ra06753g
日期:——
efficient catalytic species for C–C bond formation reactions in neat water. Under these conditions, Pd-catalyzed Heck and Sonogashira reactions are accomplished without the need for phosphineligand. The generation of emulsion droplets (5–10 μm) containing Pd(0) nanoparticles would function as an effective reactor to accelerate the rate of the reaction in water media.