Considering the given example which depicts the Diels-Alder reaction it should be predicted that whether the reaction is exothermic or endothermic reaction. Concept Introduction: Exothermic reaction: Exothermic reactions are those reactions in which heat energy is released during the reaction. Endothermic reaction: Endothermic reactions are those in which heat is absorbed during any chemical reaction . Diels-Alder reaction: It is the reaction between the conjugated diene and dienophile which results in the formation of new compound which is substituted cyclohexene derivative.

Question

True or False: Acetylene is a naturally occurring conjugated diene True or False: The Diels-Alder reaction has the stereochemistry of the dienophile is retained in the product. True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature. True or False: the mechanism of the Diels-Alder reaction is three π bonds break; one σ bond and two π bonds form.

Answer 1

Question

Chapter 6, Problem 6.53P

Interpretation Introduction

Interpretation:

Considering the given example which depicts the Diels-Alder reaction it should be predicted that whether the reaction is exothermic or endothermic reaction.

Concept Introduction:

Exothermic reaction: Exothermic reactions are those reactions in which heat energy is released during the reaction.

Endothermic reaction: Endothermic reactions are those in which heat is absorbed during any chemical reaction.

Diels-Alder reaction: It is the reaction between the conjugated diene and dienophile which results in the formation of new compound which is substituted cyclohexene derivative.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

True or False: Acetylene is a naturally occurring conjugated diene True or False: The Diels-Alder reaction has the stereochemistry of the dienophile is retained in the product. True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature. True or False: the mechanism of the Diels-Alder reaction is three π bonds break; one σ bond and two π bonds form.

Uemura and coworkers studied a time dependent Diels-Alder reaction which first formed the endo product as the major organic product and with time produced the exo product (J. Org. Chem. 2018, 83, 9300−9304). Show the endo and exo product for the reaction below. Which is the thermodynamic product and which is the kinetic product? Explain your reasoning.

Mechanism The Diels-Alder reaction is part of a class of reactions known as a cycloaddition reaction. This reaction is specifically a [4+2] cycloaddition which is a concerted (one-step) process in which two new carbon - carbon sigma bonds are formed from two pi bonds. For the first Diels - Alder step of the mechanism fill in the arrows needed for the transformation. The rest of the mechanism is drawn for you. OH Show mechanism arrows for this step! 4 + 2 cycloaddition OH H D- & H+ transfer OH Nuc acyl substitution H L.G.