Tetrahydrofuran → HCID 66898283, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-[2-methoxy-1-(methoxymethyl)ethoxy]-5-{[5-(methylsulfonyl)pyridin-2-yl]oxy}-1H-indole-2-carbothioamide (1.69 g), ethyl 2-butynoate (0.84 mL), tributylphosphine (0.9 mL), tetrahydrofuran (20 mL) and toluene (30 mL) was stirred at 50° C. for 13 h. The mixture was concentrated under reduced pressure and the residue was purified by silica gel column chromatography (methanol/ethyl acetate/hexane=0/20/80 to 5/95/0, volume ratio), followed by basic silica gel column chromatography (ethyl acetate/hexane=20/80 to 90/10, volume ratio) to give the title compound (1.14 g, 55%) as a brownish amorphous solid. MS 578 (MH+).

Provenance & Evidence