Ruthenium-catalyzed direct amination of alcohols with tertiary amines
作者:Jiaying Luo、Mingyue Wu、Fuhong Xiao、Guojun Deng
DOI:10.1016/j.tetlet.2011.03.084
日期:2011.5
A highly selective phosphine-based ruthenium catalyst system efficiently catalyzes the direct amination of alcohols with aliphatic tertiary amines, yielding unsymmetric tertiary amines in yields up to 87%. Ligand and solvent both affect the reaction yields significantly. The reaction can be performed with a wide variety of functionalities.
Furan-containing quaternaryammonium iodides, bis(trifluoromethane)sulfonimides, and tetrafluoroborates are obtained in good overall yield with mild operation conditions starting from furfural, a cheap chemical substance obtainable from crop residue feedstocks. The application of these new ion pairs can be envisioned in the fields of ionic liquid solvents, of surfactants and of biocides in analogy