Synthesis and catalytic activities of bimetallic Ru (II) arene complexes bearing bis-benzimidazoles

Year 2019, Volume: 15 Issue: 4, 351 - 356, 30.12.2019

Salih Günnaz

https://doi.org/10.18466/cbayarfbe.632188

Abstract

In this study, bis-benzimidazole
ligands (1a-d) were synthesized using linker groups and they were
evaluated as catalyst generated in situ
from [RuCl₂(p-cymene)]₂ for transfer hydrogenation (TH) of
acetophenone. The bimetallic Ru (II) arene complex (2b) synthesized from
ligand 1b which showed the best activity among the ligands in the catalytic
TH reaction. The obtained ligands and 2b complex were characterized by ¹H-
and ¹³C-NMR, elemental analysis and IR spectroscopy. The catalytic
activities of complexes having different chain lengths and Y (CH₃ or
H) groups were compared. The highest conversion (99%) was obtained with 2b.

0000-0002-7422-6593

Keywords

Bis-benzimidazole, ruthenium, transfer hydrogenation

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