Abstract
2,2‐Dichloro‐1,2‐diarylethanones were synthesized from diarylalkynes and trichloroisocyanuric acid. The reaction was conducted in CH3CN/H2O at room temperature for 12 h. In addition, the desired 2,2‐dichloro‐1,2‐diarylethanones could be prepared from aryl bromides and propiolic acid through sequential Pd‐catalyzed decarboxylative coupling and chlorination. This method showed moderate to good yields and good tolerance toward functional groups such as chlorides, bromides, aldehydes, and ketones.
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