C(N(CC)CC)C.[CH2:8]([C:10](=[CH:15][CH:16]([CH3:18])[CH3:17])[CH:11]=[CH:12][CH2:13][NH2:14])[CH3:9].Cl.[C:20](Cl)(=[O:27])[C:21]1[CH:26]=[CH:25][CH:24]=[N:23][CH:22]=1>ClCCl>[CH2:8]([C:10](=[CH:15][CH:16]([CH3:17])[CH3:18])[CH:11]=[CH:12][CH2:13][NH:14][C:20]([C:21]1[CH:22]=[N:23][CH:24]=[CH:25][CH:26]=1)=[O:27])[CH3:9]To a solution of triethylamine (5.06 g) and 4-ethyl-6-methyl-2,4-heptadiene-1-ylamine (3.06 g) in dichloromethane (50 ml) at 0° C. was added nicotinic acid chloride hydrochloride (3.56 g) in small portions during 5 minutes. The mixture was stirred for 30 minutes at 0° C. The reaction mixture was washed with water and brine, dried over anhydrous magnesium sulfate, and evaporated in vacuo. The residue was dissolved in isopropyl ether (20 ml) and allowed to stand at 5° C. overnight to give 4.46 g of N-(4-ethyl-6-methyl-2,4-heptadiene-1-yl)-3-pyridinecarboxamide.
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