New Advances in Chemical Research, May 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. Application In Synthesis of Ethyl 3-chloroquinoxaline-2-carboxylate, We’ll be discussing some of the latest developments in chemical about CAS: 49679-45-0, name is Ethyl 3-chloroquinoxaline-2-carboxylate. In an article，Which mentioned a new discovery about 49679-45-0
(Chemical Equation Presented) Derivatives of the hitherto unknown ring system, pyrazolo[4?,3?:5,6]pyrano[2,3-b]quinoxalin-4(1H)-one, are synthesized in one step from the corresponding 1-substuituted or 1,3-disubstituted 2-pyrazolin-5-ones and 3-chloroquinoxaline-2-carbonyl chloride using calcium hydroxide in boiling 1,4-dioxane. The parent system carrying no substituent in positions 1 and 3 is obtained upon treatment of the 1-PMB (p-methoxybenzyl) protected congener with trifluoroacetic acid. Detailed NMR spectroscopic investigations including unambiguous chemical shift assignments of all 1H, 13C, and 15N resonances of the obtained tetracycles are reported.
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1893 | ChemSpider