As a common heterocyclic compound, it belongs to chiral-nitrogen-ligands compound, name is N1,N2-Dimethylethane-1,2-diamine, and cas is 110-70-3, its synthesis route is as follows.
To a stirred solution of N,N’-dimethylethylenediamine (25.0 g, 0.28 mol) in 150 mL of dry diethyl ether was added diethyl oxalate (38.5 mL, 0.28 mol) in one portion. After a few minutes white crystals started to precipitate. The reaction mixture was stirred at room temperature overnight. The product was filtered and washed with dry diethyl ether. The product was dried under vacuum at 47 C overnight to give colorless crystals (38.64 g, 96%). ?H NMR (200 MHz, CDCl3, delta) : 3.50 (s, 4H), 2.99 (s, 6H). ?3C {?H} (200 MHz, CDCI3, delta): 157.35, 45.91, 34.74.
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Reference£º
Patent; GEORGIA TECH RESEARCH CORPORATION; WO2005/123754; (2005); A2;,
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis