Question

26. What is (are) the major organic product(s) formed in the following reaction? 1 mol HBr Br Br 2 Br Br 3 4 27. What is the kinetic product obtained from the addition of 1 mole of bromine to 1,3-butadiene? a. 3,4-dibromo-1-butene b. (E)-1,4-dibromo-2-butene c. (Z)-1,4-dibromo-2-butene d. (Z)-2,3-dibromo-2-butene 28. Which of the following has the highest value of $\lambda_{max}$ in the ultraviolet-visible spectrum? 2 3 4 29. What is a conjugated diene? 30. Under certain conditions, 1,3-butadienecanfunction as both a diene and a dienophile. Draw a structural formula for the Diels-Alder adduct formed by the reaction of 1,3-butadiene with itself.

          26. What is (are) the major organic product(s) formed in the following reaction?
1 mol HBr
Br
Br
2
Br
Br
3
4
27. What is the kinetic product obtained from the addition of 1 mole of bromine to 1,3-butadiene?
a. 3,4-dibromo-1-butene
b. (E)-1,4-dibromo-2-butene
c. (Z)-1,4-dibromo-2-butene
d. (Z)-2,3-dibromo-2-butene
28. Which of the following has the highest value of $\lambda_{max}$ in the ultraviolet-visible spectrum?
2
3
4
29. What is a conjugated diene?
30. Under certain conditions, 1,3-butadienecanfunction as both a diene and a dienophile. Draw a structural
formula for the Diels-Alder adduct formed by the reaction of 1,3-butadiene with itself.

26. What is (are) the major organic product(s) formed in the following reaction?
1 mol HBr
Br
Br
2
Br
Br
3
4
27. What is the kinetic product obtained from the addition of 1 mole of bromine to 1,3-butadiene?
a. 3,4-dibromo-1-butene
b. (E)-1,4-dibromo-2-butene
c. (Z)-1,4-dibromo-2-butene
d. (Z)-2,3-dibromo-2-butene
28. Which of the following has the highest value of λmax in the ultraviolet-visible spectrum?
2
3
4
29. What is a conjugated diene?
30. Under certain conditions, 1,3-butadienecanfunction as both a diene and a dienophile. Draw a structural
formula for the Diels-Alder adduct formed by the reaction of 1,3-butadiene with itself.

Added by Kathy B.

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