Reference of 2213-63-0, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.2213-63-0, Name is 2,3-Dichloroquinoxaline, molecular formula is C8H4Cl2N2. In a article，once mentioned of 2213-63-0
Studies in the syntheses of s-triazolo[4,3-a] quinoxalines
o-Phenylendiamine 1 is condensed with oxalic acid using Phillip’s procedure to obtain quinoxaline-2,3-doine 2, which on treatment with POCl3 gives the known 2,3-dichloroquinoxaline 3. 2-Chloro-3-hydrazinoquinoxaline 4 is prepared in a facile and simple way by treatment of 3 with hydrazine hydrate in methanol or in dioxane containing triethylamine. Condensation of 4 with a variety of aldehydes in DMF at room temperature furnishes the corresponding arylidene/alkylidine derivatives 5 which undergo smooth nucleophilic substitutions of chlorine by alkoxide or phenoxide ions yielding 2-alkoxy/phenoxy-3-(2-arylidene/alkylidene hydrazino) quinoxalines 6. The dehydrogenative cyclisation of 6 is achieved with chloranil in refluxing 1,2- dichloroethane resulting in s-triazole-[4,3-a] quinoxalines 7 whose structures are supported by spectral and analytical data and by alternate chemical synthesis in the case of the parent compound 7a.
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1410 | ChemSpider