反应详情

A mixture of Ph3P (36 mg, 0.14 mmol), I2 (41 mg, 0.16 mmol) and imidazole (10.5 mg, 0.15 mmol) in 0.40 mL 1,2-dichloroethane was stirred for 15 min. and then a solution of 18 (20.5 mg, 0.11 mmol) in 0.1 mL 1,2-dichloroethane was added by cannula. The resulting mixture was stirred for 1 h and then was filtered through basic alumina, washing with ethyl acetate. The filtrate was evaporated and the residue was purified by flash chromatography on silica gel to give compound 19 (26 mg, 81%).

1. stirringThe resulting mixture was stirred for 1 h
2. filtrationwas filtered through basic alumina
3. washwashing with ethyl acetate
4. customThe filtrate was evaporated
5. customthe residue was purified by flash chromatography on silica gel