Predict the major product the following reaction

1. In the molecule shown below, determine which of the highlighted C-H bonds (from a to e) is expected to have the lowest bond dissociation energy.

Ans: D

3. Which of the following is (are) the likely major product(s) of the reaction shown?

A) isolated
B) cumulated
C) skipped
D) conjugated
E) none of these
Ans. D

6 Which of the following compounds is an isolated diene?

B) II
C) III
D) IV
E) V
Ans. B

8. Classify the following compounds as having cumulated, conjugated or isolated double bonds?

9. Classify the double bonds labeled A as cumulated, conjugated or isolated double bonds?

Ans. A= conjugated
B = cumulated
C= isolated

A= conjugated
B = cumulated
C= isolated
D= both conjugated and cumulated

12. Which one of the following dienes is most stable?

B) III<II<I<IV
C) IV<II<III<I
D) II<IV<III<I
E) I<III<II<IV
Ans: C

B) II
C) III
D) IV
Ans: C

17. Which of the following dienes can undergo the Diels-Alder reaction?

	II	III
I

18. Predict the product for the following Diels-Alder reaction. O

O	I	+	O	O		+
			+ II
						III
					CCH3