Synthesis and catalytic application of cyclopentadienyl nickel(II) N-heterocyclic carbene complexes

DEMİR ATLI D.

Journal of Coordination Chemistry, cilt.73, sa.10, ss.1530-1537, 2020 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 10
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1080/00958972.2020.1786543
  • Dergi Adı: Journal of Coordination Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chimica, Metadex
  • Sayfa Sayıları: ss.1530-1537
  • Anahtar Kelimeler: benzimidazolium, catalysis, Kumada coupling, N-Heterocyclic carbene, nickel
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

A series of ester-functionalized benzimidazolium salts 2a–c were prepared by quaternization of 1-{(ethoxycarbonyl)methyl}benzimidazole (1) with 3,5-dimethylbenzyl bromide, 2,5-dimethylbenzyl chloride and 3-methoxybenzyl chloride, respectively. Refluxing 2a–c with nickelocene in THF yielded the neutral cyclopentadienyl NHC nickel(II) complexes 3a–c. Their structures were defined by NMR, IR and elemental analysis techniques. Molecular weights of 3a–c were affirmed by MALDI-TOF mass spectrometry. Catalytic tests of 3a–c were performed in Kumada coupling of some aryl chlorides with phenylmagnesium bromide at 25 °C.