Water → HCID 18429230, compound

Participants

Reaction Steps

5-[N′-(2-Propenyl)-2,3 -diacetoxypropionylamino]-3-acetoxymethyl-N-(2-acetoxyethyl)-2,4,6-triiodobenzamide (8.73 g, 9.90 mmol) was dissolved in acetone (360 ml) and water (40 ml) and the solution was cooled in an ice-bath. Osmium tetroxide (110 mg, 0.43 mmol), and an excess of t-butylhydroperoxide was added. 4-Methyl-morpholine N-oxide (2,32 g, 19.8 mmol) was added and the mixture was stirred at room temperature for 24 h. The reaction was then quenched by addition of a saturated solution of sodium hydrogen sulphite (120 ml). The acetone was evaporated, and the residue was extracted with ethyl acetate (2×70 ml). The organic extracts were washed with water (50 ml), dried (Na2SO4), and the solvent was evaporated. The residue was chromatographed on a column of silica using a mixture of ethyl acetate/acetone (1/1) as the eluent.Yield: 5.82 g (64%).

Provenance & Evidence