N,N-dimethyl-p-phenylenediamine → N4-Heptyl-N1,N1-dimethyl-1,4-benzenediamine

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Reaction Steps

A mixture of 3.50 g of N,N-dimethyl-p-phenylenediamine, 4.592 g of heptanal, 9.095 g of triacetoxyborohydride, 1.841 g of acetic acid and 257 ml of dichloromethane was stirred at room temperature for one hour. A saturated sodium hydrogen carbonate solution is added to the mixture, and the mixture was extracted with ethyl acetate. The extract was washed and dried, and the solvent was removed under reduced pressure. The residue obtained was purified by silica gel column chromatography (solvent; hexane:ethyl acetate=2:1) to give 2.819 g of N,N-dimethyl-N'-heptyl-p-phenylenediamine (yield: 39%, oily product, IR (film): 3375, 2927, 1519 cm-1).

Provenance & Evidence