Abstract
1‐Tosyl‐3,4‐dimethyl imidazolium iodide 3 was prepared by convenient cyclization, sulfonylation, and methylation from 4‐methyl‐2‐imidazoline, which was obtained by the reaction of ethyl formate with 1,2‐diaminopropane. Monofunctional carbon nucleophiles reacted with 3 to yield a series of N,N,N′‐trisubstituted ethylendiamine derivatives.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (20272034) and the Natural Science Foundation of Shanxi Province, China (20041007 and 20041006).
Supporting information available: X‐ray data for model compound 3 (CIF).