Cesium carbonate → HCID 10286581, compound

Participants

Reaction Conditions

Reaction Steps

8-Methyl-1,2,3,4-tetrahydroquinoline (125 mg, 0.85 mmol), 1-chloro-3-iodopropane (82 μl, 0.77 mmol) and Cs2CO3 (415 mg, 1.27 mmol) in acetonitrile (2 mL) were shaken at 60° C. for 7 days. KI (140 mg, 0.85 mmol), K2CO3 (117 mg, 0.85 mmol) and 4-butylpiperidine (113 μl, 0.68 mmol) were added and the reaction mixture was shaken at 60° C. for 2 days. Water (5 mL) was added and the product was extracted with ethyl acetate (2×10 mL). The organic layer was dried (Na2SO4) and concentrated in vacuo. The product was purified by column chromatography (eluent: 20% methanol in ethyl acetate) to yield the title compound. Yield: 45.6 mg (20.4%). HPLC-MS: M+1+=329.5 (UV/MS(%)=99/97). 1H NMR (400 MHz, CDCl3): δ=0.89 (3H, t), 1.18-1.34 (9H, m), 1.70 (2H, broad d), 1.75-1.92 (4H, m), 1.99 (2H, broad t), 2.22 (3H, s), 2.38 (2H, dd), 2.70-2.81 (4H, m), 2.96 (2H, broad d), 3.04-3.10 (2H, m), 6.76 (1H, t), 6.80 (1H, broad d), 6.91 (1H, broad d). 13C NMR (CD3OD): δ 13.2, 17.2, 18.0, 18.1, 22.8, 25.7, 27.7, 28.9, 31.9, 35.7, 36.2, 52.7, 53.9, 56.3, 121.5, 127.1, 128.7, 128.9, 131.0, 148.0.

Provenance & Evidence