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Voegerl, Katharina; Ong, Duc Nghia; Bracher, Franz (2018): Reductive N-Arylethylation of Aromatic Amines and N-Heterocycles with Enol Ethers. In: Synthesis-Stuttgart, Vol. 50, No. 6: pp. 1323-1330
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A convenient method for N-arylethylation of aromatic amines and heterocycles under mild reductive conditions was developed using (2-methoxyvinyl)(hetero)arenes as building blocks and triethylsilane/trifluoroacetic acid as reducing agent. This protocol is compatible with numerous functional groups, and aliphatic amines are inert due to protonation.