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Cobalt pincer complexes for catalytic reduction of nitriles to primary amines
2019, Schneekönig, Jacob, Tannert, Bianca, Hornke, Helen, Beller, Matthias, Junge, Kathrin
Various cobalt pincer type complexes 1-6 were applied for the catalytic hydrogenation of nitriles to amines. Among these, catalyst 4 is the most efficient, allowing the reduction of aromatic as well as aliphatic nitriles in moderate to excellent yields. © 2019 The Royal Society of Chemistry.
Efficient methylation of anilines with methanol catalysed by cyclometalated ruthenium complexes
2021, Piehl, Patrick, Amuso, Roberta, Spannenberg, Anke, Gabriele, Bartolo, Neumann, Helfried, Beller, Matthias
Cyclometalated ruthenium complexes4-10allow the effective methylation of anilines with methanol to selectively giveN-methylanilines. This hydrogen autotransfer procedure proceeds under mild conditions (60 °C) in a practical manner (NaOH as base). Mechanistic investigations suggest an active homogenous ruthenium complex and β-hydride elimination of methanol as the rate determining step. © The Royal Society of Chemistry 2021.