A study was made of the oxidative sulfonation of 3-hydroxyquinoline and 4-hydroxyisoquinoline.
The sulfonation of 3-hydroxyquinoline is directed to the 4 position, while the sulfonation of 4-hydroxyisoquinoline is directed to the 3 position of the pyridine ring.
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G. Heller, Ber.,59, 706 (1952).
L. D. Smirnov, N. A. Andronova, V. P. Lezina, B. E. Zaitsev, and K. M. Dyumaev, Izv. Akad. Nauk SSSR, Ser. Khim., 456 (1971).
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 455–457, February, 1972.
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Andronova, N.A., Smirnov, L.D., Lezina, V.P. et al. Oxidative sulfonation of 3-hydroxyquinoline and 4-hydroxyisoquinoline. Russ Chem Bull 21, 404–405 (1972). https://doi.org/10.1007/BF00857813
- Pyridine Ring
- Oxidative Sulfonation