Related Products of 1970-40-7. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,3,5-Trichloropyridin-4-ol, is researched, Molecular C5H2Cl3NO, CAS is 1970-40-7, about Herbicidal compounds in a series of chlorinated pyridine derivatives. Author is Moshchitskii, S. D.; Ivashchenko, Ya. N.; Orda, V. V.; Yagupol’skii, L. M..
3,4,5,6-Heptachloro-2-(trichloro-methyl)pyridine (I) heated at 130-40° with 80% H2SO4 formed 92% 3,4,5,6-tetrachloropicolinic acid, m. 172-3° (aqueous EtOH). F3CCO2OH-CHCl3 oxidized 4-amino-3,5,6-hexachloro-2-(tri-chloromethyl)pyridine (II) to the 4-nitro derivative (III), m. 73-4° (ligroine). I was hydrolyzed by NaOH in aqueous EtOH to 4-hydroxy-3,5,6-trichloropicolinic acid (IV), m. 194-5° (H2O) (Me ester m. 149-50°) also obtained from III and 80% H2SO4 at 195-200° in 2 hr. Decarboxylation of IV at 200-10° formed 4-hydroxy-2,3,5-trichloropyridine, m. 215° (aqueous EtOH). When Me 3,5,6-trichloro-4-aminopicolinate, m. 120-2° (n-C7H16), was oxidized with F3CCO2OH, the corresponding 4-nitro ester, m. 142-3° (C6H6), was formed.
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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem