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 51 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
Thanks for the timely response, appreciate it


flexer1n1

  • Member
  • Posts: 373
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

For a complete list of videos, visit our video library