3-Iodobenzene-1-sulfonamide → 3-[4-({6-[(5R)-5-(2,2-Dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxo-1,3-oxazolidin-3-yl]hexyl}oxy)but-1-ynyl]benzenesulfonamide

Participants

Reaction Steps

(5R)-3-[6-(But-3-ynyloxy)hexyl]-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one (1.79 g) was stirred with 3-iodobenzene sulphonamide (1.4 g) in acetonitrile:triethylamine (1:1, 42 ml) under nitrogen for 10 min. Cuprous iodide (0.083 g) and dichlorobis(triphenylphosphine)palladium (0.192 g) were added and the mixture was stirred for 17 h under nitrogen at 21°. The mixture was evaporated to dryness and the residue was chromatographed on silica gel (250 g) in 30% ethyl acetate:petroleum ether (bp 40-60°), then 50%, then 75% and finally ethyl acetate to give the title compound (2.35 g), LCMS RT=3.44 min.

Provenance & Evidence