Ammonium Chloride → HCID 178486613, compound

Participants

Reaction Conditions

Reaction Steps

4-Bromo-1H-imidazol (1.95 g) was dissolved in THF (30 ml) and the mixture was cooled to −78° C. A solution (1.7 M; 20 ml) of t-butyllithium in pentane was added. The mixture was stirred at 0° C. for 1.5 h and again cooled to −78° C. A solution (20 ml) of 6,7-dimethoxy-2-formyl naphthalene (3.32 g) in THF was added and the mixture was warmed from −78° C. to room temperature. The mixture was stirred at room temperature for 16 h and aqueous solution of ammonium chloride was added. The mixture was extracted with ethyl acetate and the organic layer was dried and concentrated. The residue was purified by silica gel column chromatography (eluate, dichloromethane:methanol=10:1) and crystallized from dichloromethane-methanol to give the title compound (1.31 g) as a colorless solid.

Provenance & Evidence