Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 2,3-Dichloroquinoxaline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 2213-63-0
Facile assembly of fused benzo[4,5]furo heterocycles
(Chemical Equation Presented) A concise synthesis of fused benzo[4,5]furo heterocycles 18 has been developed. Chemo/regioselective Suzuki coupling between 1,2-dihaloarene 17 and alpha-hydroxyphenylboronic acid or ester 20 gives biaryl phenol 19, which then undergoes copper(I) thiophene-2-carboxylate (CuTC)-mediated intramolecular cyclization to afford 18 in good overall yield. This method has broad substrate scope and allows facile assembly of a wide variety of benzo[4,5]furo heterocycles.
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1433 | ChemSpider