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|Title:||A ruthenium-based catalytic system for a mild borrowing-hydrogen process||Authors:||Jumde, V.R.
|Keywords:||Alcohols; Alkylation; Amines; Homogeneous catalysis; Hydrogen transfer; Ruthenium||Issue Date:||2015||Project:||None||Journal:||EUROPEAN JOURNAL OF ORGANIC CHEMISTRY||Abstract:||
The alkylation of arylamines using stoichiometric amounts of aliphatic and benzylic alcohols in the presence of tBuOK was carried out at 55 °C using a low catalyst loading of [Ru(cod)-Cl2]n/PTA (1,3,5-triaza-7-phosphaadamantane). The overall borrowing-hydrogen process does not require a controlled nitrogen atmosphere, and it could also be carried out at room temperature using higher loading of base. A wide range of substrates can be used in this transformation, and it has a good tolerance of different substituents. This catalytic system proved also to be efficient for other hydrogen-transfer reactions such as a tandem oxidation/C-C coupling between 1-phenylethanol and primary alcohols.
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