pf

Chemistry of α-Phellandrene

Contact Author Bakthan Singaram and James Verghese
Close
Fill out my online form.

Tap Into Sensory Excellence! This is just part of the article. Want the complete story, plus a host of other cutting-edge technical and business articles to make your job easier? Login or Register for free!

(+)- and (−)-α-Phellandrenes are widely distributed in nature. The (+)-isomer occurs in the oil of gingergrass, Manila elemi, bitter fennel, star anise, cinnamon, Spanish dill herb, and Boswellia serrata, among others. The (–)-hydrocarbon is found in the oil of E. dives, E. phellandra, E. cneorifolia, pimento, bay, and pepper. (±)-Phellandrene has also been described.

α-Phellandrene is used in scents, as a compenent of artificial essential oils, and as an attractive raw material for chemical syntheses. It is therefore of interest to review the significant phases of the chemistry of this p-menthadiene.

Isolation

No technique other than fractional distillation is known to separate α-phellandrene from essential oils. Since the hydrocarbon partially decomposes on distillation at ordinary pressure, the fractionation should be conducted in vacuum. Even cautious distillation under diminished pressure does not lead to anything approaching quantitative isolation of the terpene owing to its tendency to polymerize.

Want the rest of the story? Simply sign up to register. It’s easy. Plus, it only takes 1 minute and it’s free!

Related Content