Dimethylformamide → HCID 86610808, compound

Participants

Reaction Conditions

Reaction Steps

Trifluoro-methanesulfonic acid 3-(2,4-dimethoxy-phenyl)-4-(2-methoxy-ethyl)-2-oxo-2H-chromen-7-yl ester (862 mg, 1.766 mol), Zn (CN)2 (310 mg) and Pd(PPh3)4 (204 mg) were dissolved in DMF (12 mL) at room temperature in a sealed tube. After 10 min, the reaction mixture was heated to 150° C. for 4 h. The reaction mixture was cooled to room temperature and ethyl acetate (200 mL) was added. The reaction mixture was then poured into a separation funnel, washed with water (2×100 ml) and brine (2×100 ml). The organic layer was dried over sodium sulfate and concentrated. The product was purified on silica gel eluted with 30-50% ethyl acetate in hexanes to yield 3-(2,4-Dimethoxy-phenyl)-4-(2-methoxy-ethyl)-2-oxo-2H-chromene-7-carbonitrile as a slightly yellow solid.

Provenance & Evidence