Hexanal → N-hexyl-N',N'-dimethylpropane-1,3-diamine

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Reaction Steps

A solution of n-capronaldehyde (3.79 g, 37.8 mmol) and N,N-dimethylpropane-1,3-diamine (5 mL, 39.7 mmol) in anhydrous methanol (140 mL) was stirred at room temperature for 3 hours. To this solution was added slowly sodium borohydride (2.15 g, 56.8 mmol) over 5 minutes. The solution was stirred for 30 minutes then quenched with 1M NaOH (75 mL), diluted with water (125 mL) and extracted with ethyl acetate (3×150 mL). The combined ethyl acetate extracts were dried on magnesium sulfate, filtered and concentrated in vacuo to dryness. The residue was purified by column chromatography (gradient: 100% DCM to 10% MeOH in DCM with 1% NH4OH) to afford the title compound as a pale yellow oil (3.79 g, 54%).

Provenance & Evidence