A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Computed Properties of C7H8N2O2, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 619-05-6, Name is 3,4-Diaminobenzoic acid, molecular formula is C7H8N2O2. In an article, author is Ma, Xuyan,once mentioned of 619-05-6.
Synthesis and Study of Oxadisilole-Fused Benzisoxazoles or Naphthisoxazoles
Oxadisilole-fused benzisoxazoles or naphthisoxazoles were obtained through 1,3-dipolar cycloaddition of arynes with nitrile oxides in good yields at room temperature. Key to the procedure is the simultaneous in situ generation of reactive nitrile oxides from arenecarbohydroximoyl chlorides and aryne reactants from benzobis(oxadisilole) or 2,3-naphthoxadisilole. One oxadisilole-fused benzisoxazole is a new precursor of a benzyne formed by a phenyliodination/fluoride-induced elimination protocol. By using this benzyne, cycloadducts were synthesized in good yields. The de-oxadisilole reaction of some of the oxadisilole-fused benzisoxazoles could be easily conducted with a 1.0 M solution of tetrabutylammonium fluoride in THF at room temperature.
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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics