[CH2:1]([CH:7]([CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])[C:8](Cl)=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[NH:19]1[CH:23]=[N:22][CH:21]=[N:20]1.N1C=CC=CC=1.O>CC(C)=O>[CH2:1]([CH:7]([CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])[C:8]([N:19]1[CH:23]=[N:22][CH:21]=[N:20]1)=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]2-Hexyldecanoyl chloride (25 g) was added during 10 minutes to a stirred solution of 1,2,4-triazole (14 g) and pyridine (10 ml) in acetone (50 ml). During addition the temperature rose from 20° to 38°. The mixture was drowned into water and extracted with toluene, and the toluene solution was washed with water and then distilled yielding 1-(2'-hexyldecanoyl)-1,2,4-triazole (33 g), b.p. 156°-160° at 0.15 mm of mercury. This compound was evaluated as an extractant for copper using the procedure of Example 1 and the results are presented in Table 1.
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