Structural investigation and application of ruthenium(II)-benzimidazole complexes for N-alkylation
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The N-substituted ligands (1a-d) were synthesized through the reaction of benzimidazole and a base with alkyl halides. After that, a new series of N-coordinated benzimidazole ruthenium(II) complexes (2a-d) was synthesized in this study. 1H and 13C NMR spectroscopy, elemental analysis and FT-IR spectroscopy methods were applied to examine the structures of the complexes. The structures of complexes 2a-c were additionally elucidated by X-ray diffraction spectroscopy. Arylmethyl alcohols have been alkylated with these complexes in the presence of KOtBu under solvent-free mild conditions at 120 degrees C. These complexes catalyzed the N-alkylation process, yielding secondary amines from primary amines with great selectivity. Without using solvents, these complexes are found to be effective catalysts for the alkylation of aromatic amines with various alcohols. Given the structural similarity of the ruthenium complexes, it is clear that there is no substantial difference in their catalytic activity; however, the selectivity of the reaction is dependent upon the characteristics of the amines and alcohols involved.
Açıklama
Anahtar Kelimeler
Benzimidazole, N-coordinated benzimidazole ruthenium(II), Amine, Alcohol, N-alkylation, X-ray diffraction analysis
Kaynak
Journal of Organometallic Chemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
1028
