Isoborneol

Isoborneol is a bicyclic organic compound and a terpene derivative. The hydroxyl group in this compound is placed in an exo position. The endo diastereomer is called borneol. Being chiral, isoborneol exists as enantiomers.

Isoborneol
Names
IUPAC name
(1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptane-2-ol, (1R,2R,4R)-1,7,7-trimethylbicyclo[2.2.1]heptane-2-ol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
UNII
UN number1312
  • +: InChI=1S/C10H18O/c1-9(2)7-4-5-10(9,3)8(11)6-7/h7-8,11H,4-6H2,1-3H3/t7-,8-,10+/m0/s1
    Key: DTGKSKDOIYIVQL-OYNCUSHFSA-N
  • -: InChI=1S/C10H18O/c1-9(2)7-4-5-10(9,3)8(11)6-7/h7-8,11H,4-6H2,1-3H3/t7-,8-,10+/m1/s1
    Key: DTGKSKDOIYIVQL-MRTMQBJTSA-N
  • +: C[C@]12CC[C@H](C1(C)C)C[C@@H]2O
  • -: C[C@@]12CC[C@@H](C1(C)C)C[C@H]2O
  • rac: CC1(C2CCC1(C(C2)O)C)C
Properties
C10H18O
Molar mass154.253 g·mol−1
Appearancewhite or colorless solid
Melting point212–214 °C (414–417 °F; 485–487 K) + or -; 210–215 °C for rac
Hazards
GHS labelling:[1]
GHS02: Flammable
Warning
H228
P210, P240, P241, P280, P370+P378
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Preparation

Isoborneol is synthesized commercially by hydrolysis of isobornyl acetate. The latter is obtained from treatment of camphene with acetic acid in the presence of a strong acid catalyst.[2]

It can also be produced by reduction of camphor:

Isoborneol derivatives as chiral ligands

Derivatives of isoborneol are used as ligands in asymmetric synthesis.[3]

References