4-nitro-N-(2,4,4-trimethylpentan-2-yl)benzamide → 4-Amino-N-(2,4,4-trimethylpentan-2-yl)benzamide

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Reaction Steps

4-Nitro-N-(tert-octyl)benzamide (30 g, 0.108 mol) dissolved in 200 ml of ethyl acetate is hydrogenated, in a 500 ml hydrogenator, in the presence of 4.8 g of 10% palladium-on-charcoal containing 50% of water, as catalyst (hydrogen pressure: 8-10 bar), at a temperature of 70-75° C. for 1 hour and 15 minutes. After filtration, concentration of the solvent and drying under vacuum, 20.4 g (yield: 76%) of 4-amino-N-(tert-octyl)benzamide are obtained in the form of a light yellow powder, which is used as it is in the following stage.

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