This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Citral, a compound found in lemons and limes, is a mixture of two isomeric alkenes, cis- and ... (Read 34 times)

ENagel

  • Hero Member
  • *****
  • Posts: 540
on: Aug 23, 2018
Citral, a compound found in lemons and limes, is a mixture of two isomeric alkenes, cis- and trans-3,7-dimethyl-2,6-octadienal. Would you expect to see two spots, one for each isomeric alkene, when you analyzed this sample by thin layer chromatography? Explain.

Question 2

One of the known compounds you analyzed, 3,7-dimethyl-1,6-octadien-3-ol, is only available as a racemic mixture. Why did you not see two spots, one for each enantiomer, when you analyzed this sample?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

FergA

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Aug 23, 2018
Answer to Question 1



The two isomers of citral are diastereomers and therefore can potentially be separated because diastereomers can have different physical properties.

Answer to Question 2

Enantiomers are identical in all respects except for how they rotate plane-polarized light and how they interact with another chiral molecule. Therefore, because neither the stationary or mobile phase is chiral, there is no means of separating the two enantiomers and they show up as a single spot.


ENagel

  • Member
  • Posts: 540
Reply 2 on: Aug 23, 2018
Thanks for the timely response, appreciate it

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera. The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera.
Examples of Ways That Different Types of Intersections of Two Line Segments Can Be Transformed into Examples of Ways That Different Types of Intersections of Two Line Segments Can Be Transformed into
Normal combustion is a smooth, controlled burning of the air–fuel mixture. Normal combustion is a smooth, controlled burning of the air–fuel mixture.
An embedded particle of something was found on one of the gears, making this pump worthless except ... An embedded particle of something was found on one of the gears, making this pump worthless except ...
Major Types of Hydrogen Bonds Found in Biomolecular Interactions Major Types of Hydrogen Bonds Found in Biomolecular Interactions
A sampling of the modified and unusual bases found in tRNAs A sampling of the modified and unusual bases found in tRNAs
Video: Genetics of Cancer

For a complete list of videos, visit our video library