Picolinic acid → HCID 118114085, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-(3-bromo-5-tert-butylphenyl)-1H-imidazole 7 (0.98 g, 3.50 mmol, 1.0 eq), 9-(4-tert-butylpyridin-2-yl)-9H-carbazol-2-ol 10 (1.11 g, 3.50 mmol, 1.0 eq), CuI (0.10 g, 0.53 mmol, 0.15 eq), picolinic acid (0.13 g, 1.05 mmol, 0.30 eq) and K3PO4 (1.78 g, 8.40 mmol, 2.4 eq) in DMSO (7 mL) was stirred at a temperature of 100° C. for four days under a nitrogen atmosphere, then cooled to ambient temperature. The solid was filtered off and washed with plenty of ethyl acetate. The filtrate was washed with water three times and then dried over sodium sulfate and filtered. The filtrate was concentrated under reduced pressure and the residue was purified through column chromatography on silica gel using hexane/ethyl acetate as an eluent to obtain the desired product as a brown sticky liquid (1.45 g in 81% yield).

Provenance & Evidence