N,N'-Dimethylethylenediamine (DMEDA) is the organic compound with the formula (CH3NH)2C2H4. It is a colorless liquid with a fishy odor. It features two secondary amine functional groups. Regarding its name, N and N' indicate that the methyl groups are attached to different nitrogen atoms.
Reactions DMEDA is used as a chelating diamine for the preparation of metal complexes, some of which function as homogeneous catalysts. The compound is used as a precursor to imidazolidines by condensation with ketones or with aldehydes:
O=CRR' + C2H4[NH(CH3)]2 → C2H4[NH(CH3)]2CRR' + H2O
DMEDA complexes of copper(I) halides are used to catalyze C-N coupling reactions.
See also 1,1-Dimethylethylenediamine Dimethylaminopropylamine
References


![N,N'-Dimethylethylenediamine: View down chelate ring-Ni axis in trans-[NiCl2(DMEDA)2] (one DMEDA and chloride ligands omitted for clarity).[3] Color code: green = Ni, violet = N, dark gray = C](https://upload.wikimedia.org/wikipedia/commons/2/2f/Ni%28DMEN%292Cl2frag.png?utm_source=en.wikipedia.org&utm_campaign=parser&utm_content=thumbnail_unscaled)
