
Journal of Heterocyclic Chemistry p. 1293 - 1295 (1994)
Update date:2022-08-10
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N-Bromosaccharin in the precence of pyridinium poly(hydrogen fluoride) can be used for monobromination of ethyl esters of 6- and 7-substituted 4-oxo-1,4-dihydroquinoline-3-carboxylic acids. The reactions take place at the C6 or C8 po
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