Catalytic N-Alkylation of Amines Using Carboxylic Acids and Molecular Hydrogen.
A convenient, practical and green N-alkylation of amines has been accomplished by applying readily available carboxylic acids in the presence of molecular hydrogen. Applying an in situ formed ruthenium/triphos complex and an organic acid as cocatalyst, a broad range of alkylated secondary and tertiary amines are obtained in good to excellent yields. This novel method is also successfully applied for the synthesis of unsymmetrically substituted N-methyl/alkyl anilines through a direct three-component coupling reaction of the corresponding amines, carboxylic acids, and CO2 as a C1 source.
Leibniz-Institut für Katalyse e.V. Albert Einstein Strasse 29a, 18059 Rostock, Germany.
Iván
I
Sorribes
Leibniz-Institut für Katalyse e.V. Albert Einstein Strasse 29a, 18059 Rostock, Germany.
Jose R
JR
Cabrero-Antonino
Serveis Centrals d'Instrumentació Científica, Universitat Jaume I , Av. Sos Baynat s/n, 12071 Castelló de la Plana, Spain.
Cristian
C
Vicent
Leibniz-Institut für Katalyse e.V. Albert Einstein Strasse 29a, 18059 Rostock, Germany.
Kathrin
K
Junge
Leibniz-Institut für Katalyse e.V. Albert Einstein Strasse 29a, 18059 Rostock, Germany.
Matthias
M
Beller