Photo credits: ScenTree SAS
Cyclotene
Methylcyclopentenolone ; Maple Lactone ; Corylone® ; 3-methylcyclopentane-1,2-dione ; 3-methyl-cyclopantane-1,2-dione ; 3-methyl-1,2-cyclopentanedione ; Kentonarome ; 2-hydroxy-3-methyl-2-cyclopenten-1-one ; Mcp ; Methyl cyclo pentenolone ; Methyl cyclopentenelone ; 3-methyl-1,2-cyclopentanedione
Photo credits: ScenTree SAS
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General Presentation
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CAS N° : 765-70-8
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EINECS number : 212-154-8
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FEMA number : 2700
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FLAVIS number : 07.056
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JECFA number : 418
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Appearance : Colorless liquid
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Density : Volumetric mass density : 1,31 g/cm³
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Volatility : Base
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Price Range : €€€
Physico-chemical properties
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Molecular formula : C6H8O2
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Molecular Weight : 112,13 g/mol
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Log P : 0,47
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Fusion Point : 106°C
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Boiling Point : 179°C
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Detection Threshold : 300 ppb (0,00003%)
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Optical rotation : Donnée indisponible
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Vapor pressure : Donnée indisponible
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Refractive Index @20°C : Donnée indisponible
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Acid Value : Donnée indisponible.
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Flash Point : Donnée indisponible.
Uses
Uses in perfumery :
Cyclotene is used in ambery, tobacco, fougere and coumarinic notes. The impact of this ingredient increases during maceration.
Year of discovery :
1926
Natural availability :
Cyclotene is present in peanuts and roasted products like almond and coffee, but does not exist in natural extracts. It also gives maple syrup its characteristic smell.
Isomerism :
Cyclotene has no isomer of olfactory interest.
Synthesis precursor :
Cyclotene is not a precursor to the synthesis of another compound of olfactory interest.
Synthesis route :
Cyclotene is part of the cyclopentenone family, associated with pyranes and furans, both their structure and their greedy smell are close. Cyclotene can be synthesized by an acyloin condensation reaction by reacting esters of alkyl glutaric acid on themselves. Therefore, the acyloin cyclization of ethyl 2-methylglutarate followed by a treatment with cupric acid in methanol allows to obtain Cyclotene with a yield of 40%. Nowadays, other synthetic routes exist and have greater efficiency.
Regulations & IFRA
Allergens :
This ingredient does not contain any allergen.
IFRA 51th :
This ingredient is not restricted for the 51th amendment
