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 52 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
Thanks for the timely response, appreciate it

dawsa925

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen. Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen.
A good Mnemonic to know Mg K Ca Na A good Mnemonic to know Mg K Ca Na
Semi-circle bridge Semi-circle bridge
Attention and memory are in demand during circle time. Attention and memory are in demand during circle time.
If P(θ) = (√3 /2, -1/ 2), determine the coordinates of P (θ + 90 °) using the unit circle If P(θ) = (√3 /2, -1/ 2), determine the coordinates of P (θ + 90 °) using the unit circle
Quarter Circle Quarter Circle
Video: Virtual Tour of the Eye Animation

For a complete list of videos, visit our video library