21. Rank the following dienes from the most stable to the least stable. H₂C=C=C A) || > | > ||| B) II > III>1 III T C) III > >| D) I > III > || 22. Which of the following statements is correct for the Diels-Alder reaction. A) The Diels-alder reaction requires diene in S-trans conformation. B) Electron donor substituents on dienophile will increase the rate of the reaction. C) Electron donor substituents on diene will decrease the rate of the reaction. D) Electron withdrawing substituents on dienophile will increase the rate of the reaction.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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21. Rank the following dienes from the most stable to the least stable.
H₂C=C=C
A) || > | > |||
B) II > III>1
III
T
C) III > >|
D) I > III > ||
22. Which of the following statements is correct for the Diels-Alder reaction.
A) The Diels-alder reaction requires diene in S-trans conformation.
B) Electron donor substituents on dienophile will increase the rate of the reaction.
C) Electron donor substituents on diene will decrease the rate of the reaction.
D) Electron withdrawing substituents on dienophile will increase the rate of the reaction.
Transcribed Image Text:21. Rank the following dienes from the most stable to the least stable. H₂C=C=C A) || > | > ||| B) II > III>1 III T C) III > >| D) I > III > || 22. Which of the following statements is correct for the Diels-Alder reaction. A) The Diels-alder reaction requires diene in S-trans conformation. B) Electron donor substituents on dienophile will increase the rate of the reaction. C) Electron donor substituents on diene will decrease the rate of the reaction. D) Electron withdrawing substituents on dienophile will increase the rate of the reaction.
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