6-Acetyl-2,3,4,5-tetrahydropyridine is an aroma compound and

flavor Flavor or flavour is either the sensory perception of taste or smell, or a flavoring in food that produces such perception. Flavor or flavour may also refer to: Science *Flavors (programming language), an early object-oriented extension to Lis ...

that gives baked goods such as white bread,

popcorn Popcorn (also called popped corn, popcorns or pop-corn) is a variety of corn kernel which expands and puffs up when heated; the same names also refer to the foodstuff produced by the expansion. A popcorn kernel's strong hull contains the se ...

, and tortillas their typical smell, together with its structural homolog

2-acetyl-1-pyrroline 2-Acetyl-1-pyrroline (2AP) is an aroma compound and flavor that gives freshly baked bread, jasmine rice and basmati rice, the spice ''pandan'' (''Pandanus amaryllifolius''), and ''bread flowers'' (''Vallaris'' ''glabra'') their customary smell. Ma ...

. 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 The odor detection threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. The threshold of a chemical compound is determined in part by its shape, polarity, partial charges, and molecul ...

below 0.06 ng/ L.

Structure and properties

6-Acetyl-2,3,4,5-tetrahydropyridine is a

substituted A substitution reaction (also known as single displacement reaction or single substitution reaction) is a chemical reaction during which one functional group in a chemical compound is replaced by another functional group. Substitution reactions ar ...

tetrahydro pyridine and a cyclic imine as well as a

ketone In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bo ...

. 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:

References

{{DEFAULTSORT:Acetyl-2, 3, 4, 5-tetrahydropyridine, 6- Flavors Ketones Imines