2. Which class of pericyclic reactions is the Diels-Alder reaction?

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2. Which class of pericyclic reactions is the Diels-Alder reaction?
What is a (4+ 2) n cycloaddition reaction? Explain
•a cycloaddikon where ore reactant moleculee cortriautes 41
ele ctrons & the other a electrans
3.
4. (a) Give the systematic name of the diene in this reaction
15-cis)1,4-diphenyl-1,3-betadiene
(b) Calculate the difference in the standard Yree energy, AG° (kJ/mol) between the two major conformations of
this diene? (Write the formula and show your work.) = (-617.920458au-
AGO Product- reactants
k017.9259320
= 0.00S 47444K/ml.005474qu
14.37 KJ/
mol
1au= alas.KLcis)
(trans)
5. Give the systematic name of the dienophile in this reaction.
Maleie nhydride
6. Give the systematic name of the adduct in this reaction.
7. What is the melting point of your synthesized Diels-Alder adduct
8. Calculate the standard free energy of activation AG # for this reaction (Write the formula and show your work).
AG = G75- G°R
= (-994.1304ay au)-(-997.194182 au)
- 0.039898au= .639898ay• 2625 Ki /ms L = [04.75 KT/
9. Calculate the standard free energy change AG° for this reaction (Write the formula and show your work).
AGt 997.13004 au(9/9.17392)
.0378 98
Tay a625 s imol
transition statea
10. (a) Is this reaction endergonic or exergornic? Explain.
(b) What is the nature of bonds 1 and 2 of the cyclic anhydride attached to the cyclohexene ring?
Transcribed Image Text:-A on 2. Which class of pericyclic reactions is the Diels-Alder reaction? What is a (4+ 2) n cycloaddition reaction? Explain •a cycloaddikon where ore reactant moleculee cortriautes 41 ele ctrons & the other a electrans 3. 4. (a) Give the systematic name of the diene in this reaction 15-cis)1,4-diphenyl-1,3-betadiene (b) Calculate the difference in the standard Yree energy, AG° (kJ/mol) between the two major conformations of this diene? (Write the formula and show your work.) = (-617.920458au- AGO Product- reactants k017.9259320 = 0.00S 47444K/ml.005474qu 14.37 KJ/ mol 1au= alas.KLcis) (trans) 5. Give the systematic name of the dienophile in this reaction. Maleie nhydride 6. Give the systematic name of the adduct in this reaction. 7. What is the melting point of your synthesized Diels-Alder adduct 8. Calculate the standard free energy of activation AG # for this reaction (Write the formula and show your work). AG = G75- G°R = (-994.1304ay au)-(-997.194182 au) - 0.039898au= .639898ay• 2625 Ki /ms L = [04.75 KT/ 9. Calculate the standard free energy change AG° for this reaction (Write the formula and show your work). AGt 997.13004 au(9/9.17392) .0378 98 Tay a625 s imol transition statea 10. (a) Is this reaction endergonic or exergornic? Explain. (b) What is the nature of bonds 1 and 2 of the cyclic anhydride attached to the cyclohexene ring?
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