Carbon Tetrachloride → HCID 71073431, compound

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Reaction Steps

First, 7.4 g of 3-bromophenyl hydrazine hydrochloride and 80 mL of carbon tetrachloride were put into a 200-mL three-neck flask, 3.5 g of triethylamine (Et3N) was added dropwise to this mixture little by little, and the mixture was stirred at room temperature for 1 hour. After a predetermined time elapsed, 8.8 g of N-(1-ethoxybenzylidene)butyramide obtained in Step 1 of Synthesis Example 1 was added to this mixture, and the mixture was stirred at room temperature for 24 hours. After the stirring, this mixture was dissolved in chloroform and washed with water and saturated saline. After the washing, anhydrous magnesium sulfate was added to the organic layer for drying. This mixture was gravity-filtered, and the obtained filtrate was concentrated to give an oily substance. This oily substance was purified by silica gel column chromatography. As the developing solvent, dichloromethane was used. The obtained fraction was concentrated to give a solid. This solid was recrystallized with a mixed solvent of toluene and hexane to give 1-(3-bromophenyl)-3-phenyl-5-propyl-1H-1,2,4-triazole (white powder, 47% yield). The synthesis scheme of Step 1 is shown in (E-1) below.

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