Isopropylamine → N-Isopropyl-2-nitroaniline

Participants

Reaction Steps

To a solution of 1-fluoro-2-nitrobenzene (4.406 g, 31.22 mmol) in EtOH (32 mL) was added at 0° C. isopropyl amine (2.97 mL, 32.80 mmol). The mixture turned from light yellow to bright orange instantly. It was stirred overnight at RT. Another 1 eq of isopropyl amine (2.97 mL, 32.80 mmol) was added and after 3 h of stirring 2 eq of isopropyl amine were added (6 mL, 64 mmol) and the resulting solution was kept at room temperature overnight. The reaction mixture was concentrated and another equivalent of isopropyl amine was added (2.97 mL) following by EtOH (2 mL). For completion, the reaction was heated at 50° C. for 2 h. Mixture was evaporated to dryness and dissolved in EtOAc (25 mL) and the organic phase was washed with water (3*10 mL). Aqueous phase was re-extracted with EtOAc (10 mL) and the combined organics were washed with brine and dried over Na2SO4. The solvent was evaporated under reduced pressure to afford 5.24 g of N-isopropyl-2-nitrobenzenamine (Yield: 93%) as an orange liquid

Provenance & Evidence