Water → N-(4-chloro-2-fluoro-5-nitrophenyl)-3,4,5,6-tetrahydrophthalimide

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Reaction Steps

4-Chloro-2-fluoro-5-nitroaniline (19 g) and 3,4,5,6-tetrahydrophthalic anhydride (15.2 g) were dissolved in acetic acid (50 ml) and refluxed for 6 hours. After being allowed to cool, the resultant mixture was poured into water and extracted with toluene. The toluene layer was washed with water, an aqueous sodium hydrogen carbonate solution and water in order, dried and concentrated. The residue was crystallized from ethanol to give 20 g of N-(4-chloro-2-fluoro-5-nitrophenyl)-3,4,5,6-tetrahydrophthalimide. M.P., 157°-157.5° C.

Provenance & Evidence