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1,2,4-Triazole-Based N-Heterocyclic Carbene Nickel Complexes - Synthesis and Catalytic Application

Authors
  • BHEETER, LP
  • WEI, D
  • DORCET, V
  • ROISNEL, T
  • GHOSH, P
  • SORTAIS, JB
  • DARCEL, C
Publication Date
Jan 01, 2015
Source
DSpace at IIT Bombay
Keywords
Language
English
License
Unknown
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Abstract

Four nickel complexes bearing 1,2,4-triazole-based N-heterocyclic carbene backbones and a cyclopentadienyl ligand were prepared from the corresponding 1,2,4-triazolium salts and nickelocene in tetrahydrofuran (THF) under reflux. The obtained complexes were fully characterized, including by X-ray diffraction analysis. They were then used as catalysts (5 mol-%) for the borylation of aryl bromide derivatives with bis(pinacolato)diboron in the presence of Cs2CO3 as the base in THF at 70 degrees C for 20 h to form the corresponding borylated products in moderate yields.

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