Hydrazine hydrate (1:1) → 3-(2,2,3,3,3-Pentafluoropropoxy)methyl-4-methylaniline

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Reaktionsschritte

In 40 ml of ethanol, 7.30 g (0.0244 mol) of the nitro compound obtained in Example 1 was dissolved. The solution was added with 0.1 g of 10% Pd-C and 3.66 g (0.073 mol) of hydrazine hydrate and refluxed on a hot water bath for one hour. After allowed to cool by itself, the solution was passed through a Celite layer to filter out the catalyst and then washed with ethanol. The filtrate was concentrated, dissolved in dichloromethane, washed with water, a saturated sodium bicarbonate aqueous solution and a saturated sodium chloride aqueous solution, and dried over anhydrous potassium carbonate. The solvents were distilled off and the residue was fractionally distilled, collecting the fraction having a boiling point of 82°-83° C. at 0.18 mmHg. There was obtained 6.09 g of 3-(2,2,3,3,3-pentafluoropropoxy)methyl-4-methylaniline in a 93% yield.

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