Hydrochloric Acid → HCID 17975821, compound

Participants

Reaction Conditions

Reaction Steps

7-Chloro4-quinolinol (2 g, 11.1 mmol), Li2CO3 (1.7 g, 22.3 mmol) and NMP (16 mL) were charged in a 100 ml round-bottomed flask equipped with a magnetic stirrer. 1,5-Dibromopentane (13.5 g, 55.7 mmol) was added and the reaction mixture was stirred for 1 h at 90° C. The reaction mixture was poured in 100 mL of H2O, extracted with EtOAc (300 mL). The organic layer was washed with water (30 mL), brine (2×30 mL), dried over MgSO4, filtered and evaporated at 30° C. to dryness. HCl 1M in diethyl ether (15 mL, 15 mmol) was added and the bis-alkylated product was precipitated and filtered. The precipitate was dissolved in water with K2CO3 (1.5 g, 11.1 mmol), extracted with EtOAc (300 mL). The organic layer was washed with brine (2×20 mL), dried over MgSO4, filtered and evaporated at 30° C. to dryness. The crude compound was purified by column chromatography (SiO2; CH2Cl2:MeOH=99.5:0.5 to 95:5) to give after evaporation 4-(5-bromopentyloxy)-7-chloroquinoline 33 (0.45 g, 12% yield) as a white solid.

Provenance & Evidence