Cesium carbonate → HCID 59407737, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-bromobenzothiophene(5.00 g), cesium carbonate (20.0 g), 2-(2-propynyloxy)tetrahydropyran (4.96 ml), 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (672 mg), bis(acetonitrile)palladium(II) dichloride (122 mg) and acetonitrile (100 ml) was stirred at 90° C. for 11 hr. The reaction mixture was added to brine, and the mixture was extracted with ethyl acetate, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=99:1-80:20) to give the object product (2.19 g) as a brown oil.

Provenance & Evidence