Concept explainers
(a)
Interpretation:
The pericyclic selection rules have to say about the position of equilibrium in each of the reactions given in Fig. P28.30.The side of each equilibrium is favored. These statements are to be described.
Concept introduction:
Pericyclic reactions deal with electrons shift in a concerted manner. Moreover, in these reactions the breaking of reactant bonds and the formation of product bonds are formed at the same time.i.e., without the formation of intermediates. The word ‘pericyclic’ means around the cycle. Notably, the pericyclic reactions are classified as electrocyclic, cycloaddition and sigmatropic reactions based on the activation of reaction, the number of electrons involved and the stereochemistry outcome of the reactions. The selection rules of pericyclic reaction deal mostly on the
(b)
Interpretation:
The position of equilibrium is to be described.
Concept introduction:
Generally, the pericyclic reactions are classified as electrocyclic, cycloaddition and sigmatropic reactions based on the activation of reaction, the number of electrons involved and the stereochemistry outcome of the reactions. The selection rules of pericyclic reaction deal mostly on the rates of reaction and does not tell anything about position of equilibrium and equilibrium constant values.
(c)
Interpretation:
The position of equilibrium is to be described.
Concept introduction:
Generally, the pericyclic reactions are classified as electrocyclic, cycloaddition and sigmatropic reactions based on the activation of reaction, the number of electrons involved and the stereochemistry outcome of the reactions. The selection rules of pericyclic reaction deal mostly on the rates of reaction and does not tell anything about position of equilibrium and equilibrium constant values.
(d)
Interpretation:
The position of equilibrium is to be described.
Concept introduction:
Generally, the pericyclic reactions are classified as electrocyclic, cycloaddition and sigmatropic reactions based on the activation of reaction, the number of electrons involved and the stereochemistry outcome of the reactions. The selection rules of pericyclic reaction deal mostly on the rates of reaction and does not tell anything about position of equilibrium and equilibrium constant values.
(e)
Interpretation:
The position of equilibrium is to be described.
Concept introduction:
Generally, the pericyclic reactions are classified as electrocyclic, cycloaddition and sigmatropic reactions based on the activation of reaction, the number of electrons involved and the stereochemistry outcome of the reactions. The selection rules of pericyclic reaction deal mostly on the rates of reaction and does not tell anything about position of equilibrium and equilibrium constant values.
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Organic Chemistry
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