N,N'-Dimethylethylenediamine

N,N'-Dimethylethylenediamine
Names
Preferred IUPAC name
N,N′-Dimethylethane-1,2-diamine
Other names
N,N′-Dimethyl-1,2-ethanediamine
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.450 Edit this at Wikidata
EC Number
  • 203-793-3
UNII
  • InChI=1S/C4H12N2/c1-5-3-4-6-2/h5-6H,3-4H2,1-2H3
    Key: KVKFRMCSXWQSNT-UHFFFAOYSA-N
  • CNCCNC
Properties
C4H12N2
Molar mass 88.154 g·mol−1
Appearance Colorless liquid
Density 0.819 g/mL
Boiling point 120 °C (248 °F; 393 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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.[1][2]

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
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

DMEDA complexes of copper(I) halides are used to catalyze C-N coupling reactions.[4]

See also

References

  1. ^ Chan, Timothy R.; Hilgraf, Robert; Sharpless, K. Barry; Fokin, Valery V. "Polytriazoles as copper(I)-stabilizing ligands in catalysis" Organic Letters 2004, volume 6, 2853-2855. doi:10.1021/ol0493094
  2. ^ Klapars, Artis; Huang, Xiaohua; Buchwald, Stephen L. (2002). "A General and Efficient Copper Catalyst for the Amidation of Aryl Halides". Journal of the American Chemical Society. 124 (25): 7421–7428. doi:10.1021/ja0260465. PMID 12071751.
  3. ^ Ariyananda, W. G. Piyal; Norman, Richard E. (2006). "trans-Dichlorobis(N,N'-dimethylethane-1,2-diamine-κ2N,N')nickel(II)". Acta Crystallographica Section E. 62: m2339 – m2341. doi:10.1107/S1600536806033770.
  4. ^ Krout, M. R.; Mohr, J. T.; Stoltz, B. M. (2009). "PREPARATION OF (S)-tert-ButylPHOX". Organic Syntheses. 86: 181. doi:10.15227/orgsyn.086.0181. PMC 2805096. PMID 20072718.