Acetic Acid → 2-benzyl-3-iodo-6-[(3R,4S)-3-acetoxy-4-methoxypyrrolidin-1-yl]pyridine

Participants

Reaction Conditions

Reaction Steps

To a mixture of 7.9 g of cesium carbonate and 15 ml of dimethyl sulfoxide was added 4.2 ml of acetic acid. After foaming ceased, a mixture of 14.4 g of 2-benzyl-3-iodo-6-[(3S,4S)-3-(3-nitrobenzenesulfonyl)oxy-4-methoxypyrrolidin-1-yl]pyridine and 35 ml of dimethyl sulfoxide was added and the resultant mixture was heated under stirring under nitrogen atmosphere in an oil bath at 70° C. for 6 hours. After the reaction mixture was cooled, it was extracted with ethyl acetate-water. The organic layer was washed with water and brine, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by silica gel column chromatography (10–15% ethyl acetate/hexane), to give 7.5 g of the title compound.

Provenance & Evidence