Sodium Chloride → 4-(4-Bromobenzylidene)-1-[(6-chlorobenzo[b]thien-2-yl)sulfonyl]piperidine

Participants

Reaction Conditions

Reaction Steps

In a mixed solvent of tetrahydrofuran (10 ml) and ethanol (10 ml) was dissolved 4-bromobenzyl triphenylphosphonium bromide (512 mg). The resulting solution was cooled to 0° C., followed by the successive addition of sodium hydride (60% in oil, 40 mg) and 1-[(6-chlorobenzo[b]thien-2-yl)sulfonyl]piperidin-4-one (297 mg). The resulting mixture was stirred at room temperature for 16 hours and at 50° C. for 9 hours. Saturated aqueous NaCl solution and ethyl acetate were added to the reaction mixture to separate the same. The resulting organic layer was dried over anhydrous magnesium sulfate, the filtrate was concentrated and the residue was purified by chromatography on a silica gel column (hexane:ethyl acetate=4:1), whereby the title compound (colorless powder, 133 mg) was obtained.

Provenance & Evidence