Product Details of 49679-45-0, New Advances in Chemical Research in 2021. 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.49679-45-0, Name is Ethyl 3-chloroquinoxaline-2-carboxylate, molecular formula is C11H9ClN2O2. In a article，once mentioned of 49679-45-0
Ethyl-2-chloroquinoxaline-3-carboxylate obtained from ethyl-2-hydroxyquinoxaline-3-carboxylate upon treatment with morpholine gave ethyl-2-morpholinoquinoxaline-3-carboxylate (1).This ester upon reaction with hydrazine hydrate (99percent) gave respective carboxy hydrazide (2).This hydrazide on reaction with phenyl isothiocyanates gave thiosemicarbazides (3a-c).The thiosemicarbazides on reaction with concentrated sulphuric acid or anhydrous phosphoric acid gave 2-(4-substituted)-anilino-5-((2′-morpholino)quinoxalino)-1,3,4-thiadiazoles (4a-c).The thiosemicarbazides on reaction with 4percent sodium hydroxide formed 4-(para-substituted-phenyl)-3-mercapto-5-((2′-morpholino)quinoxalino)-1,2,4-triazoles (5a-c), and on reaction with I2 in KI gave 2-(4-substituted)anilino-5-((2′-morpholino)quinoxalino)-1,3,4-oxadiazoles (6a-c) respectively.
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1894 | ChemSpider