Abstract
New zwitterionic [sgrave]-C-C-bonded Meisenheimer complexes 3 are obtained by treatment of sulfonium ylides 2 with 4,6-dinitrobenzofuroxan 1 . The reaction of 3 with nitric acid affords the 5,7-dinitrobenzofurazan-4-yl aryl diketones 4 .
New zwitterionic [sgrave]-C-C-bonded Meisenheimer complexes 3 are obtained by treatment of sulfonium ylides 2 with 4,6-dinitrobenzofuroxan 1 . The reaction of 3 with nitric acid affords the 5,7-dinitrobenzofurazan-4-yl aryl diketones 4 .
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