Pyridine → HCID 67196680, compound

Participants

Reaction Steps

Pyridine (40 μl, 0.46 mmol) and thionyl chloride (35 μl, 0.46 mmol) were added successively to an ice-cooled solution of 1-(2,4-dimethoxyphenylsulfonyl)-3-(2-ethoxypridin-3-yl)-3-hydroxy-5-iodo-1,3-dihydroindol-2-one (100 mg, 0.15 mmol) in dichloromethane (30 ml). The reaction mixture was allowed to warm to room temperature and stirred for 3 hours. Ice-water was added to the reaction mixture, and the aqueous phase was extracted with dichloromethane. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The resulting crude product (110 mg) was employed without further purification in the next stage.

Provenance & Evidence