6-Acetyl-2,3,4,5-tetrahydropyridine
6-Acetyl-2,3,4,5-tetrahydropyridine, is an aroma compound and flavor that gives baked goods such as white bread, popcorn, and tortillas their typical smell, together with its structural homolog 2-acetyl-1-pyrroline.
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Names | |
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Preferred IUPAC name
1-(3,4,5,6-Tetrahydropyridin-2-yl)ethan-1-one | |
Other names
1-(3,4,5,6-Tetrahydropyridin-2-yl)ethanone 2-Acetyl-3,4,5,6-tetrahydropyridine | |
Identifiers | |
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3D model (JSmol) |
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1446593, 1446593 | |
ChEBI |
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ChemSpider | |
PubChem CID |
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Properties | |
C7H11NO | |
Molar mass | 125.171 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Infobox references | |
6-Acetyl-2,3,4,5-tetrahydropyridine and 2-acetyl-1-pyrroline are usually formed by Maillard reactions during heating of food. Both compounds have odor thresholds below 0.06 ng/l.[1] [2]
Structure and properties
6-Acetyl-2,3,4,5-tetrahydropyridine is a substituted tetrahydropyridine and a cyclic imine as well as a ketone. The compound exists in a chemical equilibrium with its tautomer 6-acetyl-1,2,3,4-tetrahydropyridine that differs only by the position of the double bond in the tetrahydropyridine ring:
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6-Acetyl-2,3,4,5-tetrahydropyridine | (1 : 2) | 6-Acetyl-1,2,3,4-tetrahydropyridine |
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References
- T. J. Harrison, G. R. Dake (2005). "An expeditious, high-yielding construction of the food aroma compounds 6-acetyl-1,2,3,4-tetrahydropyridine and 2-acetyl-1-pyrroline". J. Org. Chem. 70 (26): 10872–10874. doi:10.1021/jo051940a. PMID 16356012.
- De Kimpe, Norbert; Stevens, Christian (1993). "A convenient synthesis of 6-acetyl-1,2,3,4-tetrahydropyridine, the principle bread flavor component". Journal of Organic Chemistry. 58 (10): 2904–2906. doi:10.1021/jo00062a042.
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