New Advances in Chemical Research, May 2021. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction.25983-13-5, In a article, mentioned the application of 25983-13-5, Name is 6,7-Dichloroquinoxaline-2,3(1H,4H)-dione, molecular formula is C8H4Cl2N2O2
The invention provides a method for preparing cephalosporin lorraine ester intermediate, comprises the following steps: in a free radical initiator under the catalysis, 3 – chlorine spore with 4 – (4 – pyridyl) – 2 – mercapto thiazole generate condensation reaction, the recurrence of quaternization reaction, to obtain the pyridine salt; then for the protection of the skin of a pot, to obtain cephalosporin lorraine ester intermediate. Compared with the prior art, the present invention relates to 3 – chlorine spore as the initial reactant, for the first application; 3 – chlorine spore with 4 – (4 – pyridyl) – 2 – mercapto thiazole condensation reaction by free radical initiator catalytic, and is safe, convenient processing, which belongs to the environment-friendly reaction type, at the same time the reaction is greatly reduced and the generation of the isomer; using the one-pot synthesis at the same time get rid of 4 bits and the 7 position of the protecting group, thereby greatly simplifying the reaction process, and improves the reaction yield and the quality of the product. The synthesis method simple technology, without harsh reaction conditions and the like, is extremely suitable for industrial production. (by machine translation)
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1839 | ChemSpider