Lithium Chloride → HCID 9882655, compound

Participants

Reaction Steps

A mixture of 800 mg (2.94 mmol) of 2-methoxy-5-trimethylstannyl-pyridine, 994 mg (2.94 mmol) of 6,7-dimethoxyquinolin-3-yl trifluoromethane sulfonate, 374 mg (8.82 mmol) of anhydrous lithium chloride and 170 mg (0.147 mmol) of Pd(PPh3)4 in 15 mL of anhydrous dioxane is flushed thoroughly with nitrogen and refluxed for 6 hours. The mixture is diluted with ethyl acetate (100 mL), washed with saturated NaHCO3 (75 mL), dried (Na2SO4) and evaporated. The resulting residue is chromatographed on silica gel (eluting with chloroform) to give a solid material which is recrystallized from ethyl acetate to give 3-(2-methoxypyrid-5-yl)-6,7-dimethoxyquinoline m.p. 170.5°-171.5° C.

Provenance & Evidence