The reagents necessary to achieve the given products are to be determined. Concept introduction: 舧 Diels–Alder is a type of organic reaction in which substituted alkene and conjugated diene reacts to form substituted cyclohexene derivatives. It is a single step reaction. 舧 The general reaction of Diels-alder is as follows: 舧 The Diels–Alder reaction is between a conjugate diene and a reactant containing double bond (dienophile) to form a product, which is called adduct. 舧 The Diels-Alder reactions are highly stereospecific. The configuration of dienophile is retained in the product and the reaction is the syn addition. 舧 The dienes react with dienophiles in cis form rather than trans form. 舧 Endo and exo refers to the orientation of dienophile and its electron withdrawing group, when it reacts with a diene in Diels–Alder reaction. 舧 The reaction with orientation of electron–withdrawing group of dienophiles under the π orbitals of the diene, is Endo. 舧 The reaction with orientation of electron–withdrawing group of dienophiles away from the π orbitals of the diene, is Exo 舧 Endo is favored in the transition state of Diels–Alder reaction because of its lower energy. 舧 If a compound is stable, it has lower energy and if a compound is unstable, it has higher energy.

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Chapter 13, Problem 48P

Interpretation Introduction

Interpretation:

The reagents necessary to achieve the given products are to be determined.

Concept introduction:

舧 Diels–Alder is a type of organic reaction in which substituted alkene and conjugated diene reacts to form substituted cyclohexene derivatives. It is a single step reaction.

舧 The general reaction of Diels-alder is as follows:

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

舧 The Diels-Alder reactions are highly stereospecific. The configuration of dienophile is retained in the product and the reaction is the syn addition.

舧 The dienes react with dienophiles in cis form rather than trans form.

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

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

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

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

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

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