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首页> 外文期刊>Organometallics >pH-dependent cross-coupling reactions of water-soluble organic halides with organoboron compounds catalyzed by the organometallic aqua complex [(SCS)Pd-II(H2O)](+) (SCS=C6H3-2,6-(CH2SBut)(2))
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pH-dependent cross-coupling reactions of water-soluble organic halides with organoboron compounds catalyzed by the organometallic aqua complex [(SCS)Pd-II(H2O)](+) (SCS=C6H3-2,6-(CH2SBut)(2))

机译：有机金属水络合物[（SCS）Pd-II（H2O）]（+）（SCS = C6H3-2,6-（CH2SBut）（2）催化的水溶性有机卤化物与有机硼化合物的pH依赖性交叉偶联反应））

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This paper reports on the first example of pH-dependent cross-coupling reactions of watersoluble organic halides (3-X(C6H4)CO2H, where X = Cl, Br, I) with organoboron compounds (PhB(OH)(2) and Ph4BNa) to form 3-Ph(C6H4)CO2H, catalyzed by the mononuclear organometallic aqua complex [(SCS)Pd-II(H2O)](2)(SO4) (1)(2)(SO4), SCS = C6H3-2,6-(CH2SBut)(2)) in basic media (8 < PH < 13, NaHCO3/NaOH buffers). The structure of 1(PF6) was unequivocally determined by X-ray analysis. The reactions show unique PH selectivity depending upon the organoboron compounds; i.e., the rate of the reactions with PhB(OH)2 shows a sharp maximum around PH 10, though the rate of the reactions with Ph4BNa shows a flat maximum in a PH range of about 8-11. The PH dependence is discussed on the basis of the pK(a), values of [1](2)(SO4) and PhB(OH)(2). [References: 41]
机译：本文报道了水溶性有机卤化物（3-X（C6H4）CO2H，其中X = Cl，Br，I）与有机硼化合物（PhB（OH）（2）和Ph4BNa的pH依赖性交叉偶联反应的第一个例子）形成3-Ph（C6H4）CO2H，由单核有机金属水配合物[（SCS）Pd-II（H2O）]（2）（SO4）（1）（2）（SO4）催化，SCS = C6H3-2 ，6-（CH2SBut）（2））在碱性介质中（8

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