A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 133-37-9, Name is (2R,3R)-rel-2,3-Dihydroxysuccinic acid, molecular formula is C4H6O6. In an article, author is Kim, BH,once mentioned of 133-37-9, Safety of (2R,3R)-rel-2,3-Dihydroxysuccinic acid.
2-Bromo-2-nitropropane/Zn promoted reductive cyclizations of ortho-substituted nitroarenes toward 2,1-benzisoxazole derivatives
Under the mild conditions, reductive cyclizations of 2-nitrobenzaldehydes or 2′-nitroacetophenone towards 2,1-benzisoxazoles were accomplished in the presence of 2 bromo-2-nitropropane/Zn in methanolic solution. The synthetic utility and the role of 2-bromo-2-nitropropane were investigated.
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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics