Which of the following provides the best explanation for why the 1,2-addition product of the following reaction is favored? HBr ? 40°C O This reaction is under thermodynamic control, which favors the formation of the more stable trisubstituted double bond. O The reaction is under kinetic control which always gives the 1,2-addition product. O The reaction is under thermodynamic control which always gives the 1,2-addition product. O The 1,4-adduct is more stable and these conditions favor the less substituted alkene O The 1,2-adduct is less stable and thus is formed faster under the reaction conditions.

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Which of the following provides the best explanation for why the 1,2-addition product of the following reaction is favored?
HBr
40°C
This reaction is under thermodynamic control, which favors the formation of the more stable trisubstituted double bond.
O The reaction is under kinetic control which always gives the 1,2-addition product.
The reaction is under thermodynamic control which always gives the 1,2-addition product.
O The 1,4-adduct is more stable and these conditions favor the less substituted alkene
The 1,2-adduct is less stable and thus is formed faster under the reaction conditions.
Transcribed Image Text:Which of the following provides the best explanation for why the 1,2-addition product of the following reaction is favored? HBr 40°C This reaction is under thermodynamic control, which favors the formation of the more stable trisubstituted double bond. O The reaction is under kinetic control which always gives the 1,2-addition product. The reaction is under thermodynamic control which always gives the 1,2-addition product. O The 1,4-adduct is more stable and these conditions favor the less substituted alkene The 1,2-adduct is less stable and thus is formed faster under the reaction conditions.
Identify the products of the 1,4-addition for the following reaction.
HBr
Br
Br
+ En
Br
Br
II
II
IV
O l and II
I and IV
O Il and III
O Il and IV
O III and IV
Transcribed Image Text:Identify the products of the 1,4-addition for the following reaction. HBr Br Br + En Br Br II II IV O l and II I and IV O Il and III O Il and IV O III and IV
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