反应详情

N,N-dimethyl-2-[6-(methyloxy)-7-nitro-3,4-dihydro-1(2H)-quinolinyl]-2-oxoethanamine (crude from previous reaction, assumed 0.91 mmol) was dissolved in methanol (5 mL), treated with 10% palladium on carbon (40 mg, Aldrich), and stirred under 60 psi of hydrogen pressure for 16 h in a Fischer-Porter apparatus. The pressure was released, the reaction vessel evacuated, and back-filled with nitrogen twice. The mixture was filtered through celite, the filtrate was concentrated and purified by chromatography on SiO2 (0 to 20% methanol/dichloromethane) to provide 1-[(dimethylamino)acetyl]-6-(methyloxy)-1,2,3,4-tetrahydro-7-quinolinamine (0.18 g, 0.68 mmol, 75% over three steps). 1H NMR (400 MHz, CDCl3) δ ppm 1.88-1.97 (m, J=6.5, 6.5, 6.5, 6.5 Hz, 2 H), 2.35 (s, 6 H), 2.65 (m, 2 H), 3.24 (s, 2 H), 3.74-3.80 (m, 2 H), 3.84 (s, 3 H), 6.55 (s, 1 H), 6.76 (very broad singlet due to amide rotomers, 1 H), aniline NH2 not visible probably due to fast exchange.

1. customthe reaction vessel evacuated
2. additionback-filled with nitrogen twice
3. filtrationThe mixture was filtered through celite
4. concentrationthe filtrate was concentrated
5. custompurified by chromatography on SiO2 (0 to 20% methanol/dichloromethane)