Methanol → N-butyl-8-nitro-2-quinoline amine

Participants

Reaction Conditions

Reaction Steps

2-chloro-8-nitroquinoline (0.20 g; 0.96 mmol) is suspended in 9.5 ml of 1-butylamine and the medium is heated under reflux (78° C.) for 15 hours. The yellow solution obtained is subsequently concentrated under vacuum. The crude reaction product is taken up in a minimum volume of CH3OH and poured over 3 ml of diethyl ether. After centrifugation, butyl ammonium chloride crystals are removed and the supernatant is concentrated under reduced pressure to yield N-butyl-8-nitro-2-quinoline amine in the form of a yellow oil (0.21 g; 0.86 mmol, yield=90%). NMR-1H (250 MHz, CDCl3) δ, ppm: 7.83 (dd, 3J (H, H)=7.5 Hz, 4J (H, H)=1.5 Hz, 1H); 7.77 (d, 3J (H, H)=9.0 Hz, 1H); 7.69 (dd, 3J (H, H)=8.0 Hz, 4J (H, H)=1.5 Hz, 1H); 7.14 (m, 1H), 6.67 (d, 3J (H, H)=9.0 Hz, 1H); 5.07 (s large, 1H); 3.47 (m, 2H); 1.60 (m, 2H); 1.39 (m, 2H); 0.93 (t, 3J (H, H)=7.5 Hz, 3H). NMR-13C (63 MHz, CDCl3) δ, ppm: 157.8 (Cq); 145.6 (Cq); 140.2 (Cq); 136.7 (CH); 131.5 (CH); 124.7 (CH); 124.1 (CH); 119.7 (CH); 113.3 (Cq); 41.3 (CH2); 31.5 (CH2); 20.2 (CH2); 13.8 (CH3). MS (CID, NH3): m/z=246 (MH+). Analysis (%) for C13H15N3O2: calculated C, 63.66. H, 6.16. N, 17.13. found C, 63.33. H, 6.21. N, 16.64.

Provenance & Evidence