Acetic Acid → HCID 20303922, compound

Participants

Reaction Steps

To a solution of 1-acetyl-4-bromo-8-chloro-3,4-dihydrobenz[cd]-indol-5(1H)-one (8.3 g., 0.029 mole) in dimethylformamide (70 ml.) containing 5 ml of acetic acid and cooled in an ice bath, is added a solution of sodium azide (3.8 g. in 17 ml. of H2O) at such a rate that the reaction temperature does not exceed 25° C. Stirring is continued for 1.5 hours with cooling. The reaction mixture is poured into water (200 ml.) and the dark solid that separates is recovered by filtration and dried. The yield of crude 1-acetyl-4-azido-8-chloro-3,4-dihydrobenz[cd]-indol-5(1H)-one is 7.0 g. (97%).

Provenance & Evidence