2,2,4-trimethylhexane-1,6-diamine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 8.55 g (0.05 mol) of ethyl 2-oxo-1-pyrrolidineacetate and 3.95 g (0.025 mol) of 2,2,4-trimethyl-1,6-diaminohexane are boiled in 5 ml of absolute methanol for 22 hours, moisture being excluded. After evaporating off the solvent, the residue is chromatographed on silica gel from methanol/water (80:30). Chromatography is then carried out a second time from methanol/water/acetic acid (20:7.5:2.5), and finally the water and the acetic acid are removed by chromatography on aluminium oxide. The product is syrupy with nD54 1.5095. After evaporating off the solvent the residue is chromatographed on silica gel from methanol/water (80:30) finally the water and the acetic acid are removed by chromatography on aluminium oxide