Ruthenium(II)-(Arene)-N-Heterocyclic Carbene Complexes: Efficient and Selective Catalysts for the N-Alkylation of Aromatic Amines with Alcohols

Kaloglu N., Achard M., Bruneau C., ÖZDEMİR İ.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, sa.21, ss.2598-2606, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: Sayı: 21
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/ejic.201900191
  • Dergi Adı: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2598-2606
  • Anahtar Kelimeler: Carbene ligands, Ruthenium, Aromatic amines, Homogeneous catalysis, Alkylation, Borrowing hydrogen strategy, HETEROCYCLIC CARBENE, BORROWING HYDROGEN, BETA-ALKYLATION, SECONDARY ALCOHOLS, BOND ACTIVATION, RUTHENIUM CATALYSTS, IRIDIUM COMPLEX, AMINATION, DEHYDROGENATION, TERTIARY
  • İnönü Üniversitesi Adresli: Evet

Özet

A series of unsymmetrical 1,3-disubstituted benzimidazolium chlorides were synthesized as N-heterocyclic carbene (NHC) precursors. These compounds were used for synthesis of the new ruthenium(II) complexes of the type [RuCl2(arene)(NHC)], (arene = eta(6)-p-cymene). The structures of all compounds were characterized by H-1 NMR, C-13 NMR and FT-IR spectroscopy techniques. The catalytic activity of the ruthenium complexes has been evaluated with respect to the mono-N-alkylation reactions of aromatic amines with various alcohol derivatives under solvent-free conditions at 120 degrees C using the borrowing hydrogen strategy.