Synthesis and Catalytic Properties of [(N-Heterocyclic carbene) Pd (ferrocenyl-allyl) Cl]
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National Natural Science Foundation of China (No. 21702191); Scientific and Technological Project of Henan Province (No. 172102210555)

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    Abstract:

    [(N-Heterocyclic carbene)Pd(ferrocenyl-allyl)Cl] II was prepared easily in good yield by simple addition of THF solution of 1, 3-bis (2, 6-diisopropylphenyl) imidazolium chloride (IPrHCl) to chloride-bridged ferrocenyl-allyl-Pd dimer I at room temperature. The one-pot synthesis avoids multi-step reactions employing free carbene. Complex II was characterized by IR, 1H NMR, 13C NMR, MS and HRMS. Additionally, the detailed structure has been determined by single-crystal X-ray analysis. Complex II was stable to air and moisture, and displayed high catalytic activities for the Suzuki-Miyaura coupling reaction of a variety of aryl chlorides with aryl boronic acids with catalyst loadings of 0.4 mol % at 70 oC, and the Buchwald-Hartwig amination of chlorobenzene with various amines in the presence of 0.5 mol% complex II at 100 oC.

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History
  • Received:September 13,2019
  • Revised:November 17,2019
  • Adopted:November 25,2019
  • Online: January 10,2020
  • Published:
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