16. Conjugated Systems

Which of the following statements about the $\mathrm{Diels}-\mathrm{Alder}$ reaction is true?

Which combination of diene and dienophile is required to synthesize $C_6{H}_{10}$ (cyclohexene) via a Diels-Alder reaction?

Given the reaction between $C_4{H}_6$ (1,3-butadiene) and $C_2{H}_2{O}_2$ (ethene-1,2-dione), identify the expected major product of the Diels-Alder reaction.

Which one of the following dienophiles is least reactive in the Diels-Alder reaction?

Given the following Diels-Alder product: $C_6{H}_8$ (a cyclohexene ring), which combination of diene and dienophile would most likely produce this compound?

Which of the following is the correct product of the Diels-Alder reaction between $C_4{H}_6$ (1,3-butadiene) and $C_2{H}_{2}O$ (ethene-1,2-dione)?

Which pair of diene and dienophile would react to give the following Diels-Alder product: a cyclohexene ring with a single carboxylic acid group at the $1$-position and a methyl group at the $4$-position?

Which of the following pairs of reactants would undergo a Diels-Alder reaction to produce $C_6{H}_{10}$ (cyclohexene)?

Which of the following best describes the mechanism of the Diels-Alder reaction?

Which pair of reactants would be used in a Diels-Alder reaction to synthesize the following cyclohexene derivative: $C_6{H}_{10}$ with a single double bond and a methyl group at the 1-position?

Which of the following is the major product when $1_3-\mathrm{butadiene}$ reacts with $\mathrm{ethene}$ in a Diels-Alder reaction?

Why is $\mathrm{xylene}$ (dimethylbenzene) commonly used as a solvent in the $\mathrm{Diels}-\mathrm{Alder}$ reaction?

Which of the following best describes the product formed when $1,3-\mathrm{butadiene}$ reacts with $\mathrm{ethene}$ in a Diels-Alder reaction?

Given the reaction between $C_4{H}_6$ (1,3-butadiene) and $C_2{H}_2{O}_2$ (ethene-1,2-dione), identify the expected major product of this Diels-Alder reaction.

What is the major product formed when $\mathrm{anthracene}$ reacts with $\mathrm{maleic}\mathrm{anhydride}$ in a Diels-Alder reaction?