Treatment of dithranol 1 with various equivalents of acetyl chloride and Et3N in THF at room temperature afforded the corresponding acylated derivatives, such as 1‐acetyloxy‐ and 1,8‐diacetyloxy‐9(10H)‐anthracenones, 6a, and 6b, as well as 1,8,9‐triacetyloxyanthracene 7a, and 1,8,9‐triacetyloxy‐10‐acetylanthracene 7b. 1,8‐Bis(trimethylacetyloxy)‐9(10H)‐anthracenone 6c was also obtained in high yield by using pivaloyl chloride during the mild acylation.
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