3'-Nitro-4'-methylacetophenone → 1-(3-Amino-4-methylphenyl)ethan-1-ol

関与物質

反応手順

To an ice-cold solution of 4-methyl-3-nitroacetophenone (25 g, 139 mmol) in methanol (200 mL) is added sodium borohydride (6.2 g, 163 mmol) over 15 minutes. The mixture is stirred at room temperature for 1 hour, then is quenched with water. The mixture is rotary evaporated and the residue is partitioned between water and ethyl acetate. The organic layer is dried (magnesium sulfate) and rotary evaporated to afford a light brown viscous oil. The oil is diluted with ethyl acetate (200 mL), 5% palladium-on-carbon (5 g) is added and the mixture is treated with hydrogen at 40 psi for 18 hours. The mixture is then filtered on Celite and the filtrate is rotary evaporated to afford 3-(1-hydroxyethyl)-6-methylaniline as a light yellow, pasty solid.

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