Mild and Efficient Reductive N,N‐Dimethylation of Amines by Using 1,3‐Dimethylimidazole‐2‐ylidene Borane (diMe‐Imd‐BH3).

Herein, we report a new, simple, one pot and chemoselective method for N‐methylation and N,N‐dimethylation of aliphatic and aromatic amines under ambient conditions using NHC‐borane i.e 1,3‐dimethylimidazole‐2‐ylidene borane (diMe‐Imd‐BH3), as reducing agent. The present strategy has significant advantages like mild reaction conditions, quick and effortless work‐up processes, and the use of non‐toxic inexpensive reagents. The amines with acid‐sensitive moieties are also methylated successfully. [ABSTRACT FROM AUTHOR]