The structure of isodrin is to be proposed with the help of given reaction which form isodrin. Concept introduction: Diels–Alder reaction is between a conjugate diene and a reactant containing double bond (dienophile) to form the product and the product is called adduct. Diels–Alder reactions are highly stereospecific. The configuration, if dienophile is retained in the product and the reaction, is syn addition. The dienes react with dienophiles in cis forms rather than trans forms. Endo and exo refers to the orientation of dienophile and its electron withdrawing group, when it reacts with a diene in Diels–Alder reaction. The reaction with orientation of electron withdrawing group of dienophiles under the π orbitals of the diene is Endo. The reaction with orientation of electron withdrawing group of dienophiles away from the π orbitals of the diene is Exo Endo is favored in the transition state of Diels–Alder reaction because of its lower energy. If a compound is stable, it has lower energy, and if a compound is unstable, it has higher energy. The Diels–Alder reaction is the reaction where the conjugate addition of a conjugate diene on alkene occurs to produce cyclohexene. The reaction is thermodynamically favorable. There is a high degree of stereo selectivity due to concerted mechanism involved and it is useful in synthetic organic reactions.

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Chapter SRP, Problem 9P

Interpretation Introduction

Interpretation:

The structure of isodrin is to be proposed with the help of given reaction which form isodrin.

Concept introduction:

Diels–Alder reaction is between a conjugate diene and a reactant containing double bond (dienophile) to form the product and the product is called adduct.

Diels–Alder reactions are highly stereospecific. The configuration, if dienophile is retained in the product and the reaction, is syn addition.

The dienes react with dienophiles in cis forms rather than trans forms.

Endo and exo refers to the orientation of dienophile and its electron withdrawing group, when it reacts with a diene in Diels–Alder reaction.

The reaction with orientation of electron withdrawing group of dienophiles under the π orbitals of the diene is Endo.

The reaction with orientation of electron withdrawing group of dienophiles away from the π orbitals of the diene is Exo

Endo is favored in the transition state of Diels–Alder reaction because of its lower energy.

If a compound is stable, it has lower energy, and if a compound is unstable, it has higher energy.

The Diels–Alder reaction is the reaction where the conjugate addition of a conjugate diene on alkene occurs to produce cyclohexene.

The reaction is thermodynamically favorable.

There is a high degree of stereo selectivity due to concerted mechanism involved and it is useful in synthetic organic reactions.

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