Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 31: Question 31.11 (page 1247)

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

Short Answer

Expert verified

Answer

Step by step solution

01

Step-by-Step SolutionStep 1: 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 comprises five carbon atoms, four carbons in a row, and one-carbon branch on a middle carbon.

Isoprene units of biformene

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Draw the products formed when triacylglycerol A is treated with each reagent. Rank compounds A, B and C in order of increasing melting point.

  1. H2O,H+
  2. data-custom-editor="chemistry" H2(excess),data-custom-editor="chemistry" Pd-C→B
  3. H2(1 equiv), Pd-C→C

One component of lanolin, the wax that coats sheep’s wool, is derived from cholesterol and stearic acid. Draw its structure, including the correct stereochemistry of all stereogenic centers.

Question: The biosynthesis of lanosterol from squalene has intrigued chemists since its discovery. It is now possible, for example, to synthesize polycyclic compounds from acyclic or monocyclic precursors by reactions that form several C-C bonds in a single reaction mixture.

  1. Draw a stepwise mechanism for the following reaction.
  2. Show how X can be converted to 16, 17-dehydroprogesterone. (Hint: See Figure 24.5 for a related conversion.

Question: An isoprene unit can be thought of as having a head and a tail. The “head” of the isoprene unit is located at the end of the chain nearest the branch point, and the “tail” is located at the end of the carbon chain farthest from the branch point. Most isoprene units are connected together in a “head-to-tail” fashion, as illustrated. For both lycopene (Problem 31.26), and squalene (Figure 31.9), decide which isoprene units are connected in a head-to-tail fashion and which are not.

Question: Draw a stepwise mechanism for the conversion of neryl diphosphate to α-pinene, α-pineneis a component of pine oil and rosemary oil.
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

Chemical Reactions

Read Explanation

Physical Chemistry

Read Explanation

Nuclear Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Inorganic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free