Title: Caryophyllene
CAS Registry Number: 87-44-5
CAS Name: (1
R,4
E,9
S)-4,11,11-Trimethyl-8-methylenebicyclo[7.2.0]undec-4-ene
Synonyms: b-caryophyllene;
trans-caryophyllene
Molecular Formula: C15H24
Molecular Weight: 204.35
Percent Composition: C 88.16%, H 11.84%
Literature References: Sesquiterpenoid occurring in many essential oils and especially in clove oil, the oils from stems and flowers of
Syzygium aromaticum (L.) Merrill & Perry (
Jambrosa caryophyllus Niedenzu;
Eugenia caryophyllata Thunb.),
Myrtaceae. Occurs in nature as a mixture with isocaryophyllene and a-caryophyllene (humulene,
q.v.). Isolation of mixture: Schreiner, Kremers,
Pharm. Arch. 2, 273, 293 (1899). Existence of isomers: Deussen,
Ann. 356, 1 (1907). Structural studies: A. Aebi
et al., J. Chem. Soc. 1953, 3124; G. R. Ramage, R. Whitehead,
ibid. 1954, 4336. Abs config: D. H. R. Barton, A. Nickon,
ibid. 4665. Total synthesis of racemic
trans/cis-forms: E. J. Corey
et al., J. Am. Chem. Soc. 86, 485 (1964). Rearrangement to isocaryophyllene: Rachlin,
DE 2044018 (1971 to I.F.F.),
C.A. 75, 49364j (1971).
Reviews: Simonsen,
The Terpenes vol. III (University Press, Cambridge, 1952) pp 39-71; Barton, de Mayo,
Q. Rev. Chem. Soc. 11, 197 (1957); Halsall,
ibid. 16, 101 (1962).
Properties: Liquid. Has a terpene odor about midway between odor of cloves and turpentine. bp14 129-130°; bp9.7 118-119°. [a]D -8 to -9° (chloroform).
nD17 1.5009;
nD15 1.5030. d417 0.9052.
Boiling point: bp14 129-130°; bp9.7 118-119°
Optical Rotation: [a]D -8 to -9° (chloroform)
Index of refraction: nD17 1.5009;
nD15 1.5030
Density: d417 0.9052
Derivative Type: Isocaryophyllene
CAS Registry Number: 118-65-0
Synonyms: g-Caryophyllene;
cis-caryophyllene
Properties: Liquid. bp19 130°; bp14.5 125-125.5°. [a]D -24° (chloroform).
nD19 1.4966. d19 0.8995.
Boiling point: bp19 130°; bp14.5 125-125.5°
Optical Rotation: [a]D -24° (chloroform)
Index of refraction: nD19 1.4966
Density: d19 0.8995
Use: In perfumery.