Acetone → HCID 59973113, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of [[1-[[(1,1-dimethylethyl)oxy]carbonyl]-1H-pyrrol-2-yl]methyl]triphenylphosphonium iodide (2.3 g, 4.0 mmol) (prepared according to the procedure of: V. H. Rawal et. al., J. Org. Chem. 1987, 52(1), 19-28) in 36 mL DMF at 0° C. under argon, was added slowly NaH (0.13 g, 5.4 mmol). The mixture was stirred at 0° C. for 45 min. The solution was then allowed to warm to room temperature and 5-iodoisatin (1.0 g, 3.66 mmol) was added. The solution was heated at reflux for 15 h, at which time acetone (1 mL) was added and the solvent mixture was evaporated. The residue was then purified via flash column chromatography (25% EtOAc/hex) to yield (Z)-1,3-dihydro-5-iodo-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 1.05 g, 83%).

Provenance & Evidence