Hydrophilic (η<sup>6</sup>-Arene)–Ruthenium(II) Complexes with P–OH Ligands as Catalysts for the Isomerization of Allylbenzenes and C–H Bond Arylation Reactions in Water
Half-sandwich ruthenium(II) complexes containing η6-coordinated 3-phenylpropanol and phosphinous-acid-type ligands, namely, [RuCl2(η6-C6H5CH2CH2CH2OH)P(OH)R2}] (R = Me (2a), Ph (2b), 4-C6H4CF3 (2c), 4-C6H4OMe (2d), OMe (2e), OEt (2f), and OPh (2g), have been synthesized in 44–88% yield by reacting [RuCl2η6:κ1(O)-C6H5CH2CH2CH2OH}] (1) with the appropriate pentavalent phosphorus oxide R2P(═O)H. The
含η半夹心钌(II)配合物6配位的3-苯基丙醇和亚膦酸基型配体,即,将[RuCl 2(η 6 -C 6 H ^ 5 CH 2 CH 2 CH 2 OH)P(OH) R 2 }](R = Me(2a),Ph(2b),4-C 6 H 4 CF 3(2c),4-C 6 H 4 OMe(2d),OMe(2e),OEt(2f),和OPh(2克),已在44-88%的产率通过反应而合成将[RuCl 2 η 6:κ 1(Ò)-C 6 H ^ 5 CH 2 CH 2 CH 2 OH}](1)与适当的五价磷氧化物R 2 P(= O)H。的结构将[RuCl 2(η 6 -C 6 H ^ 5 CH 2 CH 2 CH 2 OH)P(OH)Me 2 }](2A)通过X射线衍射方法进行了明确地证实。化合物2a – g被证明是催化活性在allylbenzenes的异构化为相应的(1-丙烯基)采用水作为唯一的反应溶剂,用将[RuCl苯衍生物2(η
C−H Bond Activation/Arylation Catalyzed by Arene-Ruthenium-Aniline Complexes in Water
作者:Chinky Binnani、Deepika Tyagi、Rohit K. Rai、Shaikh M. Mobin、Sanjay K. Singh
DOI:10.1002/asia.201600954
日期:2016.11.7
Water‐soluble arene–ruthenium complexes coordinated with readily available aniline‐based ligands were successfully employed as highly active catalysts in the C−H bond activation and arylation of 2‐phenylpyridine with aryl halides in water. A variety of (hetero)aryl halides were also used for the ortho‐C−H bond arylation of 2‐phenylpyridine to afford the corresponding ortho‐ monoarylated products as
Ligand‐Tuned C–H Bond Activation/Arylation of 2‐Arylpyridines over Pyridine‐Based
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Ligated Ruthenium–Arene Complexes
作者:Chinky Binnani、Rohit K. Rai、Deepika Tyagi、Shaikh M. Mobin、Sanjay K. Singh
DOI:10.1002/ejic.201701446
日期:2018.3.29
our investigations, including time‐dependent 1H NMRspectroscopic studies with ruthenium–arene catalysts, demonstrate a remarkable structure–activity relationship for the ligand‐tuned C–H activation/arylation of 2‐phenylpyridine, where the complexes with bischelating N,O donor‐based ligands (acteylpyridine and picolinate) outperform those with N,N donor ligands (iminopyridine). Moreover, among the N
Environmentally benign catalyst: A PPh3‐modified Ru/CeO2 catalyst showed excellent catalytic activity toward directCHarylation by using various aryl chlorides in the reaction (see scheme). The catalyst was found to act heterogeneously and could be recycled without significant loss of activity.
对环境无害的催化剂:通过在反应中使用各种芳基氯化物,PPh 3改性的Ru / CeO 2催化剂对直接CH芳基化反应表现出出色的催化活性(请参阅方案)。发现该催化剂具有异质作用,可以循环使用而不会显着降低活性。