Toluene → HCID 178448140, compound

Participants

Reaction Steps

5.9 ml of a solution of diethyl azodicarboxylate in toluene (40%) (12.9 mmol) was added to a solution of 4.00 g of N-{(S)-2-hydroxy-1-[(2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide obtained in Example (1f) (10.7 mmol) and 3.38 g of triphenylphosphine (12.9 mmol) in tetrahydrofuran (100 ml) under ice-cooling over 10 minutes, and the mixture was stirred at the same temperature for 10 minutes. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent: toluene/acetone=5/1) to obtain 3.40 g of the title compound (yield: 89%).

Provenance & Evidence