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. 92-92-2, Name is [1,1′-Biphenyl]-4-carboxylic acid, molecular formula is C13H10O2. In an article, author is Rastogi, Shiva K.,once mentioned of 92-92-2, HPLC of Formula: https://www.ambeed.com/products/92-92-2.html.
Two protocols for oxygenation of aromatic C-H bonds ortho-positioned to the phthalazine ring were developed. The transannulation of the phthalazine ring to a naphthalene moiety by an Inverse Electron Demand Diels-Alder (IEDDA) reaction led to the synthesis of naphtho[2,1-c]chromenes, 1-(ortho-hydroxyaryl)naphthalenes and 6,7-dihydrobenzo[b]naphtho[1,2-d]oxepine. This new strategy based on the utilization of transformable nitrogen heterocycles in C-H functionalization chemistry can be potentially applicable to the synthesis of a broad range of biaryl compounds.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem