The authors have studied iodination of 2-phenyl-, 2-(4'-alkylphenyl)-, 2-(4'-chlorophenyl)-, and 2-(4'-methoxyphenyl)-3-hydroxypyridines.
Iodination of 2-aryl-3-hydroxypyridines takes place in the 6 position of theβ-pyridole ring.
Introduction of electron-donor substituents into the phenyl ring does not change the direction of iodination of 2-aryl-3-hydroxypyridines.
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O. V. Schickh, A. Binz, and A. Schulz, Ber., 69, 2593 (1936).
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2400–2401, October, 1970.
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Smirnov, L.D., Kuz'min, V.I., Lezina, V.P. et al. Iodination of 2-aryl-3-hydroxypyridines. Russ Chem Bull 19, 2263–2264 (1970). https://doi.org/10.1007/BF00861517
- Phenyl Ring