Chemistry Reference
In-Depth Information
3. Describe the coordination polymerization of lactones.
4. What are the instances of “living” polymerizations of cyclic lactones and what type of catalysts
yield this type of polymerization? Describe and give examples.
Section 5.9
1. What are the three mechanisms of polymerization of lactams?
2. Describe the catalysts that are useful in cationic polymerizations of lactams and the mechanism of
polymerization.
3. Show how amidine salts form in cationic polymerizations of lactams and explain how that
influences the reaction.
4. Discuss the anionic polymerization of lactams and compare that with the cationic one.
5. What is meant by lactomolytic propagation? Explain.
6. Describe the proposed mechanism for polymerizations of lactams with dialkoxyaluminum
hydrides.
7. Describe hydrolytic polymerization of lactams.
8. Compare cationic, anionic, and hydrolytic polymerizations of lactams by writing out all three
modes of polymerization side by side and discuss and show the side reactions that take place in
each one of them.
Section 5.10
1. Discuss the polymerization of
N
-carboxy-
a
-amino acid anhydrides
Section 5.11
1. What is metathesis polymerization? Explain the mechanism and show the reaction on a
disubstitued olefin.
2. Describe metathesis polymerization of methyl cyclobutene showing the mechanisms of initiation
and propagation.
3. Describe “living” metathesis polymerization. What
types of catalysts are useful
in such
polymerizations?
Section 5.12
1. Describe the polymerization of aziridines, showing the initiation and propagation processes.
Section 5.13
1. Explain the three mechanisms by which cyclic sulfides can be polymerized. Describe each.
2. Describe the initiation and propagation reactions in cationic polymerizations of cyclic sulfides.
