反应详情

温度

100 °C

The 3-methyl-5-nitroaniline (10.0 g, 65.7 mmol) was added to water (146 ml) and treated with 6N HCl (22.5 ml, 135.0 mmol) and 5% Rhodium on Alumina (1.9 g, 0.9 mmol). The mixture was charged to 105 atm of Hydrogen and heated to 100° C. for 19 hours. The reaction was cooled and filtered through celite and concentrated to dryness to give 5-methylcyclohexane-1,3-diamine dihydrochloride (12.9 g, 64.5 mmol) as a racemic mixture. The salt (6.5 g, 32.5 mmol) was dissolved in isopropyl alcohol (100 ml) and acetonitrile (100 ml) and treated with potassium carbonate (25.2 g, 182.0 mmol). The mixture was stirred at room temperature overnight, filtered thru celite, and concentrated in vacuo to afford 2.2 g of 5-methylcyclohexane-1,3-diamine as a racemic brown oil: LCMS RT=0.41 (M+1) 128.9.

1. temperatureThe reaction was cooled
2. filtrationfiltered through celite and
3. concentrationconcentrated to dryness