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196436

Sigma-Aldrich

(1R)-(−)-Fenchone

≥98%

Synonym(s):

(−)-1,3,3-Trimethyl-2-norbornanone, (−)-Fenchone, (1R)-1,3,3-Trimethylbicyclo[2.2.1]heptan-2-one

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About This Item

Empirical Formula (Hill Notation):
C10H16O
CAS Number:
7787-20-4
Molecular Weight:
152.23
Beilstein:
2042710
EC Number:
232-107-5
MDL number:
MFCD00151104
UNSPSC Code:
12352200
PubChem Substance ID:
24851759
NACRES:
NA.22

Assay

≥98%

form

liquid

optical activity

[α]24/D −50.5°, neat

refractive index

n20/D 1.461 (lit.)

bp

192-194 °C (lit.)

mp

5-6 °C (lit.)

density

0.948 g/mL at 25 °C (lit.)

SMILES string

CC1(C)C2CCC(C)(C2)C1=O

InChI

1S/C10H16O/c1-9(2)7-4-5-10(3,6-7)8(9)11/h7H,4-6H2,1-3H3/t7-,10+/m0/s1

InChI key

LHXDLQBQYFFVNW-OIBJUYFYSA-N

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General description

(1R)-(-)-Fenchone is a bridged bicyclic ketone found in fennel oil and thuja oil.

Application

(1R)-(-)-Fenchone undergoes condensation with pyridinylalkylamines to form chiral iminopyridine ligands, which find applications in enantioselective copper-catalyzed Henry (nitro aldol) reaction. It may also be used in the preparation of enantiopure C(7)-anti-substituted fenchones as new chiral sources.

Pictograms

Environment
GHS09

Hazard Statements

H411

Precautionary Statements

P273 - P391 - P501

Hazard Classifications

Aquatic Chronic 2

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

151.7 °F - closed cup

Flash Point(C)

66.5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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(1R)-(-)-Fenchone.
Bond AD and Davies JE.
Acta Crystallographica Section E, Structure Reports Online, 57(11), o1034-o1035 (2001)
Regio-and stereochemical course of the ring expansion of bridged bicyclic ketones to spirocyclic a-keto tetrahydrofurans.
Paquette LA, et al.
The Journal of Organic Chemistry, 57(14), 3956-3965 (1992)
First access to enantiopure C (7)-substituted fenchones: new norbornane-based chiral materials from the chiral pool.
Marti'nez AG, et al.
Tetrahedron Asymmetry, 14(12), 1607-1609 (2003)
Modular iminopyridine ligands. Application to the enantioselective copper (II)-catalyzed Henry reaction.
Blay G, et al.
Tetrahedron Asymmetry, 17(14), 2046-2049 (2006)
B Simándi et al.
Journal of agricultural and food chemistry, 47(4), 1635-1640 (1999-11-24)
Ground fennel seeds were extracted with supercritical carbon dioxide. Small-scale subsequent extractions of the same sample showed that the composition of volatile compounds was changed with the extension of extraction time and only principal volatile components (limonene, fenchone, methylchavicol, and
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