So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Setliff, Frank L.; Lane, Julie E. researched the compound: 2-Chloro-5-iodo-3-methylpyridine( cas:59782-89-7 ).Recommanded Product: 59782-89-7.They published the article 《Some 2,5- and 5,6-dihalonicotinic acids and their precursors. IV》 about this compound( cas:59782-89-7 ) in Journal of Chemical and Engineering Data. Keywords: pyridinecarboxylic acid dihalo; nicotinic acid dihalo; oxidation picoline; chloropyridinecarboxylic acid. We’ll tell you more about this compound (cas:59782-89-7).
The pyridinecarboxylic acids I (R = Cl, R1 = CO2H, R2 = Cl, iodo; R = Cl, R1 = Cl, iodo, R2 = CO2H) were prepared by oxidation of I (R = Cl, R1 = Me, R2 = Cl, iodo; R = Cl, R1 = Cl, iodo, R2 = Me; resp.), which were prepared by diazotization and substitution of I (R = Cl, R1 = Me, R2 = NH2; R = Cl, R1 = NH2, R2 = Me; resp.). I (R = R1 = Cl, R2 = CO2H) and NaI gave I (R = iodo, R1 = Cl, R2 = CO2H).
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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem