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Direct arylation (hetero-coupling) of heteroarenes via unsymmetrical palladium-PEPPSI-NHC type complexes

Nawaz, Zahid; Gurbuz, Nevin; Zafar, Muhammad Naveed; Tahir, Muhammad Nawaz; Ashfaq, Muhammad; Karci, Huseyin; Ozdemir, Ismail


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        "name": "Nawaz, Zahid"
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      {
        "name": "Gurbuz, Nevin"
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      {
        "affiliation": "Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan", 
        "name": "Zafar, Muhammad Naveed"
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      {
        "affiliation": "Univ Sargodha, Dept Phys, Sargodha 40100, Pakistan", 
        "name": "Tahir, Muhammad Nawaz"
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      {
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      {
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    "description": "The growing interest of industry in the field of bi(hetero)arenes compounds, motivated us to synthesize these compounds via homogeneous catalytic route by using Pd PEPPSI-type complexes through direct arylation. In this work, the five new Pd PEPPSI-type complexes bearing NHC spectator ligands were synthesized and characterized by a bunch of spectroscopic techniques. Further confirmations of structural details were provided by a single crystal X-ray diffraction study of one pro-ligand and one complex. All these newly synthesized Pd-carbene complexes were found significantly active as catalysts toward direct arylation of five members heterocyclic compounds such as n-propylthaizole, 2-acetylfurane and 2-acetylthiophene with aryl bromides derivatives. These catalysts give significantly good results within two hours with just 1 mol % catalyst loading.", 
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