Journal
ORGANIC LETTERS
Volume 8, Issue 21, Pages 4811-4813Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol061867q
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The synthesis of a series of benzisothiazolone derivatives starting from the readily available methyl thiosalicylate is presented. The key cyclization step features the formation of a N-acylnitrenium ion, generated by the hypervalent iodine reagent PIFA, and its succeeding intramolecular trapping by the thiole moiety leading to the construction of the title compounds by formation of a new N-S bond.
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