Dichloromethane → 5-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylsulphanylmethyl]-furan-2-carboxylic acid methyl ester

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Reaction Conditions

Reaction Steps

[1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (30 mg) and 4,4,5,5-tetramethyl-[1,3,2]dioxaborolane (2.34 ml of a 1M solution in tetrahydrofuran) were added to a degassed solution of 4-(4-bromo-phenylsulphanylmethyl)-5-methyl-furan-2-carboxylic acid methyl ester (150) (400 mg, 1.17 mmoles) in 1,4-dioxan (120 ml). The mixture was heated at 100° C., under an argon atmosphere, for 20 hours, cooled and evaporated. The residue was partitioned between ethyl acetate and water, and the organic phase washed with brine and dried (MgSO4). After evaporation of the solvent the residue was purified by flash chromatography, using heptane/ethyl acetate 9:1 v/v as eluent, to afford compound 151 (212 mg) as a colourless oil.

Provenance & Evidence