Abstract
The Vicarious Nucleophilic Substitution of hydrogen in 4-nitrobenzofuroxan derivatives by carbanions of chloromethyl phenyl sulfone, chloromethyl p-tolyl sulfone, chloromethyl tert-butyl sulfone, and N,N-dimethyl chloromethane sulfonamide proceeds at positions 5 and 7. In some cases the Boulton–Katritzky rearrangement of the products obtained, leading to more stable 7-substituted isomers, was observed. Keywords: carbanions, nitrobenzofuroxans, sulfones, Vicarious Nucleophilic Substitution, Boulton–Katritzky rearrangement.
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