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Chapter 31: Q11. (page 1231)

Question: Locate the isoprene units in biformene, a component of amber, and classify biformene as a monoterpene, sesquiterpene etc.

Short Answer

Expert verified

Answer

Biformene is a sesquiterpene.

Step by step solution

01

Isoprene

Isoprene units come under the category of unsaturated hydrocarbons. It comprises five carbon atoms possessing double bonds. Carotene is an example of an isoprenoid.

02

Biformene

Biformene is a kind of terpene comprising the molecular formula C20H32 . It is a natural product found in the flower Helianthus decapetalus.

03

Locating the isoprene units in biformene

The skeletal structure of biformene can be given as:

Skeletal structure of biformene

Terpenes comprise repeating five-carbon units termed isoprene units. Each isoprene unit shall consist of five carbon atoms, four carbons in a row, and one-carbon branch on a middle carbon.

The isoprene units in the given terpene, biformene are indicated in blue color as:

Isoprene units of biformene

The given terpene comprises four isoprene units. Hence, biformene is a sesquiterpene.

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Locate the isoprene units in each compound.

a.

b.

c.

d.

Locate the isoprene units in biformene, a component of amber, and classify biformene as a monoterpene, sesquiterpene etc.
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