Pyridine-2-carbaldehyde, also called 2-formylpyridine, is an organic compound with the formula NC5H4CHO. It is one of three isomeric pyridinaldehydes. The other isomers are pyridine-3-carboxaldehyde and pyridine-4-carboxaldehyde.
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| Names | |
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| Preferred IUPAC name
Pyridine-2-carbaldehyde | |
| Other names
Picolinaldehyde
2-Pyridine carboxaldehyde 2-Pyridyl aldehyde Picolinal | |
| Identifiers | |
3D model (JSmol)
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| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.013.031 |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| C6H5NO | |
| Molar mass | 107.112 g·mol−1 |
| Density | 1.126 g/mL |
| Melting point | 148–151 °C (298–304 °F; 421–424 K) |
| Boiling point | 181 °C (358 °F; 454 K) |
| Related compounds | |
Related Aldehydes
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Salicylaldehyde Quinoline Carboxaldehyde |
Related compounds
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Picolinic acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Pyridine-2-carbaldehyde is a colorless oily liquid with a distinctive odor. Older samples are often brown-colored owing to impurities. It serves as a precursor to other compounds of interest in coordination chemistry and pharmaceuticals. Pyridine aldehydes are typically prepared by oxidation of the hydroxymethyl- or methylpyridines.[1]
Reactions and uses
editThe drug pralidoxime can be produced from 2-formylpyridine.
The aldehyde functional group is subject to nucleophilic attack, specifically by amines to form Schiff bases, which serve as bidentate ligands.[2] Iminopyridine complexes can be remarkably robust.[3]
References
edit- ^ Shimizu, Shinkichi; Watanabe, Nanao; Kataoka, Toshiaki; Shoji, Takayuki; Abe, Nobuyuki; Morishita, Sinji; Ichimura, Hisao (2007). "Pyridine and Pyridine Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a22_399. ISBN 978-3527306732.
- ^ Chatterjeea, D.; Mitra, A. (2004). "Synthesis, Characterization and Reactivities of Schiff-base Complexes of Ruthenium(III)". J. Coord. Chem. 57: 175–182. doi:10.1080/00958970410001662435.
- ^ Mal, P.; Breiner, B.; Rissanen, K.; Nitschke, J. R. (2009). "White Phosphorus is Air-Stable Within a Self-Assembled Tetrahedral Capsule". Science. 324 (5935): 1697–1699. doi:10.1126/science.1175313. PMID 19556504.