HPLC of Formula: 27828-71-3. 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. Compound: 5-Hydroxynicotinic acid, is researched, Molecular C6H5NO3, CAS is 27828-71-3, about β-Hydroxypyridinecarboxylic acids. Communication 1. Electrophilic reactions of 5-hydroxynicotinic acids.
5-Hydroxynicotinic acid derivatives (I, R1 = H, iodo, piperidinomethyl, morpholinomethyl, NO2, PhN:N, p-BrC6H4N:N, p-O2NC6H4N:N, p-MeOC6H4N:N, R2 = H; R1 = H, iodo, PhN:N, NO2, morpholinomethyl, R2 = Et) were obtained in 20-98% yields by appropriate electrophilic substitution reactions of I (R1 = H, R2 = H, Et).
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method