New downstream synthetic route of 110-70-3

110-70-3, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. N1,N2-Dimethylethane-1,2-diamine, cas is 110-70-3,the chiral-nitrogen-ligands compound. Here is a downstream synthesis route of the compound.

Preparation of N-tert-Butoxycarbonyl-N, N’-dimethylethylenediamine; Lambda/,Lambda/-dimethylethylenediamine (1.O g, 11.3 mmol) was dissolved in anhydrous dichloromethane (10 ml.) and was treated with triethylamine (1.6 ml_, 1 1.3 mmol). The mixture EPO was cooled to 0 C for the addition of di-terf-butyl dicarbonate (2.5 g, 1 1.3 mmol). The reaction stirred for 30 min at 0 C then 2 hours at room temperature. The reaction mixture was then washed with water (10 ml.) and the aqueous layer extracted with further portions of dichloromethane (2 x 10 ml_). The combined organic phases were dried over NaaSCu and the solvent removed in vacuo. Purification by column chromatography (40:8:1 , dichloromethane:methanol:aqueous ammonia) yielded (508 mg, 24 %) of the desired N-tert- butoxycarbonyl-N,N’-dimethylethylenediamine as a colourless oil.

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Reference£º
Patent; BIOTICA TECHNOLOGY LTD.; WO2007/26027; (2007); A1;,
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