This topic contains a solution. Click here to go to the answer

Author Question: The mnemonic phrase The Electrons Circle Around, TECA, assists in predicting stereochemistry of ... (Read 47 times)

ahriuashd

  • Hero Member
  • *****
  • Posts: 535
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
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
Wow, this really help


ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Excellent

 

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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?

In 1864, the first barbiturate (barbituric acid) was synthesized.

For a complete list of videos, visit our video library