Whether a conjugated diyne such as 1,3-butadiyne will give Diels-Alder reaction with a dienophile or not is to be explained. Concept introduction: In Diels-Alder reaction, a dienophile reacts with a diene to yield a cyclic adduct. The reaction takes place through 1,4 addition of the dienophile into the diene through a cyclic transition state. These reactions occur rapidly with dienophiles having electron withdrawing substituent groups in conjugation with the double bond and if the diene adapts a s-cis conformation during the reaction. To explain: Whether a conjugated diyne such as 1,3-butadiyne will give Diels-Alder reaction with a dienophile or not.

Question

1/2 - 51% + » GAY Organic Reactions Assignment /26 Write the type of reaction that is occurring on the line provided then complete the reaction. Only include the major products and any byproducts (e.g. H₂O) but no minor products. Please use either full structural diagrams or the combination method shown in the lesson. Skeletal/line diagrams will not be accepted. H3C 1. 2. CH3 A Acid OH Type of Reaction: NH Type of Reaction: + H₂O Catalyst + HBr 3. Type of Reaction: H3C 4. Type Reaction: 5. H3C CH2 + H2O OH + [0] CH3 Type of Reaction: 6. OH CH3 HO CH3 + Type of Reaction: 7. Type of Reaction: + [H]

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Question

Chapter 14.SE, Problem 35AP

Interpretation Introduction

Interpretation:

Whether a conjugated diyne such as 1,3-butadiyne will give Diels-Alder reaction with a dienophile or not is to be explained.

Concept introduction:

In Diels-Alder reaction, a dienophile reacts with a diene to yield a cyclic adduct. The reaction takes place through 1,4 addition of the dienophile into the diene through a cyclic transition state. These reactions occur rapidly with dienophiles having electron withdrawing substituent groups in conjugation with the double bond and if the diene adapts a s-cis conformation during the reaction.

To explain:

Whether a conjugated diyne such as 1,3-butadiyne will give Diels-Alder reaction with a dienophile or not.

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