4-Pyridinecarboxaldehyde(4PCA) is a slightly yellow oily liquid. Its relative density is 1.122, and its refractive index is 1.5352 (25°C). Flash point is 54 ° C. 4-Pyridinecarboxaldehyde is soluble in water and ether.4-Pyridinecarboxaldehyde, also commonly called pyridine-2-carboxaldehyde, is an organic compound with the formula NC5H4CHO. 4-Pyridinecarboxaldehyde is a colorless oily liquid with a distinctive odor. Older samples are often brown-colored owing to impurities.
4-Pyridinecarboxaldehyde is an heterocyclic building block used for the synthesis of various pharmaceutical compounds, such as new 1,4-dihydropyridin-4-yl-phenoxyacetohydrazones, having anticonvulsant and anti-inflammatory properties.4-Pyridinecarboxaldehyde and some of its derivatives have also been reported as useful transamination reagents to introduce ketone or aldehyde groups onto the N-termini of antibodies for subsequent site-specifically conjugate aminooxy-functionalized molecules (including fluorescent dyes, polyethylene glycol, or porphyrins) to these entities.
4-Pyridinecarboxaldehyde can be used for the synthesis of: β-Unsaturated amides by coupling with N,N-disubstituted formamides; meso-Substituted A3-corroles; N-(4-pyridylmethyl)-L-valine as a ligand to construct zinc metal–organic frameworks (Zn-MOFs); 4′-Pyridyl terpyridines, with potential application as anticancer and antimicrobial agents; 4-pyridinecarboxaldehyde thiosemicarbazone, as a corrosion inhibitor for mild steel.
clear yellow-brown liquid. soluble in water and ether.
4-Pyridinecarboxaldehyde can be used for the synthesis of:
- γ,β-Unsaturated amides by coupling with N,N-disubstituted formamides.
- meso-Substituted A3-corroles.
- N-(4-pyridylmethyl)-L-valine as a ligand to construct zinc metal–organic frameworks (Zn-MOFs).
- 4′-Pyridyl terpyridines, with potential application as anticancer and antimicrobial agents.
- 4-pyridinecarboxaldehyde thiosemicarbazone, as a corrosion inhibitor for mild steel.
4-Pyridinecarboxaldehyde, is an heterocyclic building block used for the synthesis of various pharmaceutical compounds, such as new 1,4-dihydropyridin-4-yl-phenoxyacetohydrazones, having anticonvulsant and anti-inflammatory properties.
4-Pyridinecarbaldehyde is synthesized by oxidation of 4-picoline. The mixed gas of 4-picoline and air is passed through the vanadium-molybdenum catalyst layer heated to 400°C, and oxidized to generate 4-pyridinecarbaldehyde.
As a colorless liquid with a pungent odor, 4-Pyridinecarboxaldehyde serves as a component in the synthesis of diverse organic compounds. Its applications extend to the synthesis of pharmaceuticals, fragrances, and pesticides. Moreover, it has proven instrumental in the creation of a wide range of organic compounds, including antioxidants and anti-inflammatory agents.
4-Pyridinecarboxaldehyde undergoes many reactions expected for aromatic aldehydes such as reductive amination and Schiff base formation. It condenses with pyrrole to give tetrapyridylporphyrin.
Purified as for pyridine-2-aldehyde. [Beilstein 21 III/IV 2529, 21/7 V 351.]
