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首页> 外文期刊>Organometallics >Zn(II) Byproduct Enhances the Cu-Catalyzed Cross-Coupling of Bromozinc Difluorophosphonate with Iodobenzoates: A DFT Study
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Zn(II) Byproduct Enhances the Cu-Catalyzed Cross-Coupling of Bromozinc Difluorophosphonate with Iodobenzoates: A DFT Study

机译:Zn(ii)副产物增强了碘苯甲酸盐的溴辛醚二氟膦酸盐的Cu催化的交联:DFT研究

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摘要

The copper-catalyzed cross-coupling of bromozinc difluorophosphonate with iodobenzoates has been studied with the DFT methodology in order to understand the experimentally observed reactivity. The directing carboxylate group promotes the reaction for methyl 2-iodobenzoate and, unexpectedly, also for methyl 4-iodobenzoate, although to a lesser extent. DFT calculations show that the Zn(II) byproduct, formed in the initial stages of the reaction, remains attached to the catalyst and serves as an anchoring point for the benzoate moiety, allowing in turn the reaction for both ortho- and para-substituted iodobenzoates. The computationally derived reaction mechanism has also been applied to study whether other substrates may engage in a similar cross-coupling process with bromozinc difluorophosphonate. The calculations carried out on substrates bearing nitrogen-directing groups, such as triazene and pyridine, indicate that their reactions should be possible and that the latter should produce a much faster reaction in comparison to iodobenzoates.
机译:用DFT方法研究了用碘苯甲酸酯的铜催化的铜催化交叉偶联用碘苯甲酸酯进行了研究,以了解实验观察到的反应性。引导羧酸甲酸盐基团促进甲基2-碘苯甲酸甲酯的反应,并且意外地,也适用于4-碘苯甲酸甲酯,尽管在较小程度上。 DFT计算表明,在反应的初始阶段形成的Zn(II)副产物保持在催化剂上保持并用作苯甲酸酯部分的锚固点,允许反应术和对替代的碘苯甲酸酯。还应用了计算衍生的反应机制来研究其他底物是否可以与溴辛溶解的类似交叉偶联过程。在含氮引导基团的基材上进行的计算,例如三烯和吡啶,表明它们的反应应该是可能的,并且与碘苯甲酸酯相比,后者应该产生更快的反应。

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  • 来源
    《Organometallics》 |2018年第3期|共10页
  • 作者

    Jesús Jover;

  • 作者单位

    Departament de Química Inorgànica i Orgànica Secció de Química Inorgànica and Institut de Química Teòrica i Computacional (IQTC-UB) Universitat de Barcelona Martí i Franquès 1-11 08028 Barcelona Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 元素有机化合物;
  • 关键词

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