Piperidine → 2-Nitro-3-(piperidin-1-yl)aniline

関与物質

反応条件

反応手順

To a solution of 3-chloro-2-nitroaniline (CXXI) (2.00 g, 11.6 mmol, 1 eq) and piperidine (2.95 g, 34.7 mmol, 3 eq) in DMF (60 ml) was added K2CO3 (4.78 g, 34.4 mmol, 3 eq) in one portion and the mixture was stirred at 120° C. under nitrogen overnight. The reaction mixture was diluted with ethyl acetate (60 ml) and washed with saturated NaHCO3 solution (50 mL). The organic phases were dried over Na2SO4 and concentrated in vacuo, the resultant residue was purified by silica gel column chromatography (PE:EtOAc=5:1→1:1) to give 2-nitro-3-(piperidin-1-yl)aniline (CXXII) (1.8 g, 8.14 mmol, 70.3% yield) as a black solid. ESIMS found for C11H15N3O2 m/z 222 (M+H).

情報源と証拠