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

Author Question: The mnemonic phrase The Electrons Circle Around, TECA, assists in predicting stereochemistry of ... (Read 42 times)

ahriuashd

  • Hero Member
  • *****
  • Posts: 535
on: Aug 23, 2018
The mnemonic phrase The Electrons Circle Around, TECA, assists in predicting stereochemistry of pericyclic reactions. Describe application of this mnemonic.

Question 2

There are three major classes of pericyclic reactions. Which of the following types of reactions is not an example of a pericyclic process?
 a. sigmatropic rearrangements
  b. cycloaddition reactions
  c. annulation reactions
  d. electrocyclic reactions


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akpaschal

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Aug 23, 2018
Answer to Question 1

The mnemonic TECA assists us in remembering that Thermal pericyclic reactions with Even numbers of electrons will occur with Conrotatory or Antarafacial stereochemistry. As a result, the following statements also apply: Photochemical pericyclic reactions with even numbers of electrons will occur with disrotatory or suprafacial stereochemistry. Thermal pericyclic reactions with odd numbers of electrons will occur with disrotatory or suprafacial stereochemistry. Photochemical pericyclic reactions with odd numbers of electrons will occur with conrotatory or antarafacial stereochemistry.

Answer to Question 2

c


ahriuashd

  • Member
  • Posts: 535
Reply 2 on: Aug 23, 2018
:D TYSM

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

APGAR Scoring Mnemonic Maternal Nursing APGAR Scoring Mnemonic Maternal Nursing
Dark-Circle Dark-Circle
Apply passive touch over abdomen to finish. Slow the circle stroke you performed in Step 14, and let ... Apply passive touch over abdomen to finish. Slow the circle stroke you performed in Step 14, and let ...
How to evaluate angles using cosecant, special triangles, and the unit circle (Part 3) How to evaluate angles using cosecant, special triangles, and the unit circle (Part 3)
Coenzyme Q collects electrons from multiple flavoproteins Coenzyme Q collects electrons from multiple flavoproteins
Substance P assists the transmission of impulses across the synapse Substance P assists the transmission of impulses across the synapse
Video: Wound Care

For a complete list of videos, visit our video library