Trifluoroacetic acid → HCID 67044243, compound

Participants

Reaction Steps

A mixture of 3-(pyridin-4-ylsulfanyl)thiophene-2-carbaldehyde (1.3 g), (5-fluoro-2-methylindol-1-yl)acetic acid methyl ester (1.3 g) and 1,2-dichloroethane (30 mL) at −10° C. was treated with a mixture of triethylsilane (5.8 mL), trifluoroacetic acid (2.4 mL) and 1,2-dichloroethane (20 mL), and the resulting mixture was stirred at room temperature for 48 hours. The mixture was diluted with dichloromethane, washed with aqueous sodium bicarbonate solution and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel, eluting with ethyl acetate to afford the title compound as yellow foam (2.4 g).

Provenance & Evidence