[CH2:1]([C:7]([CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH3:17])([C:10]#[N:11])[C:8]#[N:9])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]>C(O)C.[Ni]>[CH2:12]([C:7]([CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH3:6])([CH2:8][NH2:9])[CH2:10][NH2:11])[CH2:13][CH2:14][CH2:15][CH2:16][CH3:17]180.5 g (0.77 mol) of 2,2-dihexylpropanedinitrile was dissolved in 320 ml of ethanol. About 5 g of Raney nickel (dispersion in toluene) was added thereto, and the dinitrile was catalytically reduced at 100° C. under hydrogen pressure of 100 kg/m2 in an autoclave for 6 hours. The catalyst was removed, and ethanol was distilled off to obtain an oily material. The oily material was distilled under reduced pressure to obtain 119 g of the desired product as a colorless oil (boiling point: 153° to 160° C./4 mmHg).
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