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Synthesis of Cyano-Substituted Heterocycles by Means of Tetraethylammonium Cyanide
Chloropyrimidines 2, 3 and Chlorquinazolines 9, 10, after conversion into trimethylammonio derivatives 4, 5, 11, 12, react with tetraethylammonium cyanide 1a under very mild conditions to give pyrimidine carbonitriles 6, 7 and quinazoline carbonitriles 13, 14.Direct synthesis of quinoxaline carbonitriles 19 is possible by reaction of chloroquinoxalines 15, 18 with 1a.
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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1897 | ChemSpider