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Study on the Chlorination Reaction of Hydrazones by Using of Trichloroisocyanuric Acid as Chloride Source

The chlorination reaction of hydrazones with N-aryltrifluoroacetohydrazones by using trichloroisocyanuric acid as chlorine source was investigated, and a series of N-arylhydrazonyl chlorides and N-aryltrifluoroacetohydrazonyl chlorides were obtained in high yields. This method had advatages of easy operation, short reaction time, mild conditions and the use of stable and cheap chlorine source, which provides an efficiant method for the synthesis of N-arylhydrazonyl chlorides and N-aryltrifluoroacetohydrazonyl chlorides.