For Diels-Alder Cycloaddition Reactions to Take Place Most Rapidly and in Highest

question 15

Multiple Choice

For Diels-Alder cycloaddition reactions to take place most rapidly and in highest yield the dienophile must:

• A)be substituted with electron-withdrawing groups
• B)be able to adopt an s-trans conformation
• C)be substituted with electron-donating groups
• D)be able to adopt an s-cis conformation

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Marble

A metamorphic rock composed primarily of calcite or dolomite, known for its use in sculpture and as a building material.