Triphenylphosphine → HCID 131733348, compound

Participants

Reaction Steps

A solution of (Z)-7-[(1R,2R,3R,5S)-2-(3-(tert-butyldimethyl-silyloxy)decyl)-5-hydroxy-3-(tetrahydro-2H-pyran-2-yloxy)cyclopentyl)hept-5-enoic acid (61 g from Example 39) in 250 mL xylene was treated with 2,2′-dipyridyl disulfide (36 g, 0.17 mol) and triphenylphosphine (38 g, 0.43 mol). This mixture was then stirred for 1 hour at room temperature under an atmosphere of nitrogen and the resulting mixture was heated to 80° C. for 18 hours. Then, the xylene was removed under reduced pressure, and the residue was diluted with 200 ml saturated sodium bicarbonate aqueous solution and extracted with 200 ml ethyl acetate twice. The organic layer was dried over anhydrous MgSO4. The solid was filtered off and organic solvent was evaporated off under vacuum. The crude product was purified by chromatography on silica gel using a mixture of hexane and ethyl acetate as a gradient eluent. Yield of the title compound was 25 g (75% in 3 steps).

Provenance & Evidence