Organic Chemistry · free preview
Chapter 30: Review and Practice
A pericyclic reaction takes place in a single step through a cyclic transition state without intermediates. There are three major classes of pericyclic processes: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangeme
1. A pericyclic reaction takes place in a single step through a
A pericyclic reaction takes place in a single step through a
2. The stereochemistry of any pericyclic reaction can be predic
The stereochemistry of any pericyclic reaction can be predic
3. Chemistry Matters — Vitamin D, the Sunshine Vitamin
Chemistry Matters — Vitamin D, the Sunshine Vitamin
4. Pericyclic reactions are unusual in living organisms, and th
Pericyclic reactions are unusual in living organisms, and th
5. Additional Problems
Additional Problems
6. Problem 30-17 The sex hormone estrone has been synthesized b
Problem 30-17 The sex hormone estrone has been synthesized b
7. Problem 30-21 The following thermal isomerization occurs und
Problem 30-21 The following thermal isomerization occurs und
8. Problem 30-25 Answer Problem 30-24 for the thermal and photo
Problem 30-25 Answer Problem 30-24 for the thermal and photo
9. Problem 30-29 Two sequential pericyclic reactions are involv
Problem 30-29 Two sequential pericyclic reactions are involv
10. Problem 30-33 The following synthesis of dienones occurs rea
Problem 30-33 The following synthesis of dienones occurs rea
11. Problem 30-37 Ring-opening of the trans-cyclobutene isomer s
Problem 30-37 Ring-opening of the trans-cyclobutene isomer s
12. Problem 30-41 The following reaction is an example of a [2,3
Problem 30-41 The following reaction is an example of a [2,3
13. Problem 30-45 (a) (b) (c)
Problem 30-45 (a) (b) (c)
14. Key Terms
Key Terms
15. - electrocyclic reaction - frontier orbitals - highest occup
- electrocyclic reaction - frontier orbitals - highest occup
16. - pericyclic reaction - photochemical reaction - sigmatropic
- pericyclic reaction - photochemical reaction - sigmatropic
17. - symmetry-allowed - symmetry-disallowed
- symmetry-allowed - symmetry-disallowed
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