Sulfuric Acid → 7-Iodoisatin

Participants

Reaction Conditions

Reaction Steps

2-(hydroxyimino)-N-(2-iodophenyl)acetamide (3.2 g, 0.011 mmol) was added to conc. H2SO4 (15 mL) in small portions at 60° C. The reaction mixture was further heated at 85° C. for 5 h. After the reaction completion, the reaction mixture was cooled to room temperature and poured into crushed ice. A brown color solid product precipitated. It was then filtered and washed with chilled water several times, then dried in a vacuum oven to get 2.9 g of the required product as a red coloured solid (87%).

Provenance & Evidence