[NH2:1][CH2:2][C:3]([NH2:6])([CH3:5])[CH3:4].[C:7](#N)[CH2:8][CH2:9][CH2:10][CH2:11][CH3:12]>C(=S)=S>[CH3:4][C:3]1([CH3:5])[CH2:2][NH:1][C:7]([CH2:8][CH2:9][CH2:10][CH2:11][CH3:12])=[N:6]18.41 g (95.4 mmoles) of 1,2-diamino-2-methylpropane, 7.4 g (76.16 mmoles) of hexanenitrile and 0.4 ml of carbon disulfide were heated at 125° C. for 24 hours and then worked up as under Example 23. Distillation at 105°-107° C./0.5 mm gave 9.4 g (73.4%) of product.
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