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. 1878-68-8, Name is 4-Bromophenylacetic acid, molecular formula is C8H7BrO2. In an article, author is Wang, Bo,once mentioned of 1878-68-8, HPLC of Formula: https://www.ambeed.com/products/1878-68-8.html.
The thermal [3 + 2] cycloaddition reaction of phthalazinium dicyanomethanide with various allenoates worked efficiently under mild reaction conditions to give functionalized tetrahydropyrrolo[2,1-alpha] phthalazine derivatives in good to excellent yields and excellent diastereoselectivities. (C) 2017 Elsevier Ltd. All rights reserved.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 1878-68-8, you can contact me at any time and look forward to more communication. HPLC of Formula: https://www.ambeed.com/products/1878-68-8.html.
Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem