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Ruthenium-Catalyzed Direct Methylation of Primary and Secondary Aromatic Amines Using Carbon Dioxide and Molecular Hydrogen

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Leitner,  Walter
Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Beydoun, K., vom Stein, T., Klankermeyer, J., & Leitner, W. (2013). Ruthenium-Catalyzed Direct Methylation of Primary and Secondary Aromatic Amines Using Carbon Dioxide and Molecular Hydrogen. Angewandte Chemie International Edition, 52(36), 9554-9557. doi:10.1002/anie.201304656.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-C9DB-2
Abstract
The effective catalytic N-methylation of anilines using CO2 as C1 source and molecular hydrogen as reducing agent was demonstrated using the well-defined [Ru(triphos)(tmm)] catalyst. Secondary and primary (shown) aromatic amines were mono- or dialkylated, respectively, in high yields. N-methylation of amides coupled with the amide hydrogenation offers an efficient approach to unsymmetrical tertiary methyl/alkyl/aromatic amines.