Benzimidazolium sulfonate ligand precursors and application in ruthenium-catalyzed aromatic amine alkylation with alcohols

Nazan Kaloglu (1) , İsmail Özdemir (1) , Nevin Gürbüz (1) , Mathieu Achard (2) , Christian Bruneau (2)

1 Inonu University
2 ISCR - Institut des Sciences Chimiques de Rennes

New benzimidazolium sulfonate salts have been prepared and fully characterized. They have been associated in situ with [RuCl2(p-cymene)]2 to generate efficient catalytic systems operating at 120 °C under neat conditions in the presence of potassium tert-butylate for selective N-alkylation of primary aromatic amines into secondary amines.

Keywords: Benzimidazolium sulfonates; Hydrogen borrowing; N-alkylation; Ruthenium catalysis

Domains: Chemical Sciences

Nazan Kaloglu, İsmail Özdemir, Nevin Gürbüz, Mathieu Achard, Christian Bruneau. Benzimidazolium sulfonate ligand precursors and application in ruthenium-catalyzed aromatic amine alkylation with alcohols. Catalysis Communications, 2016, 74, pp.33--38. ⟨10.1016/j.catcom.2015.10.028⟩. ⟨hal-01263044⟩