The directive effects in the nitration under standard conditions of a series of substituted 4-chloroquinolines and 4-quinolones are discussed. 6-Methyl and 6-methoxy-substituents direct the nitronium ion into the 5-position whereas a 7-chloro-substituent directs this ion into the 8-position.
N. D. Heindel, C. J. Ohnmacht, J. Molnar and P. D. Kennewell, J. Chem. Soc. C, 1969, 1369 DOI: 10.1039/J39690001369
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