Methyl iodide → HCID 22708766, compound

Participants

Reaction Steps

To a stirred solution of 8-(N-tert-butoxycarbonylamino)-1,2,3,4-tetrahydroquinoline (0.876 g, 3.52 mmol) in CH2Cl2 (35 mL), at room temperature was added excess methyl iodide (2 mL, 32.12 mmol). The mixture was stirred at room temperature for 48 hours. The mixture was poured into saturated aqueous NaHCO3 (25 mL) and diluted with CH2Cl2 (25 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×25 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by flash chromatography (36 g silica gel, 10:1 hexanes-ethyl acetate) provided 0.83 g (90%) of 1-methyl-8-(N-tert-butoxycarbonylamino)-1,2,3,4-tetrahydroquinoline as a colorless oil. 1H NMR (CDCl3) δ 1.53 (s, 9H), 1.84–1.92 (m, 2H), 2.62 (s, 3H), 2.79 (t, 2H, J=6.6 Hz), 3.03–3.07 (m, 2H), 6.73 (d, 1H, J=7.8 Hz), 6.95 (dd, 1H, J=7.8, 7.8 Hz), 7.18 (br s, 1H, NH), 7.82 (br d, 1H, J=7.8 Hz).

Provenance & Evidence