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Unformatted text preview: fin Metathesis and Polymerization
Ring-opening metathesis: 14.14
Ziegler–Natta Catalysis of
Alkene Catalysis of Alkene Polymerization
First observed in the 1950’s: Current metallocene catalysts and aluminum based promoter: MAO Mechanism of Polymerization
Step 1. Formation of the active catalyst. Step 2. π-Addition. Mechanism of Polymerization
Step 3. Methyl migration. Step 4. π-Addition then alkyl migration. After thousands of repetitions polyethylene is formed....
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This note was uploaded on 03/22/2014 for the course CHEM 330 taught by Professor Shen during the Fall '08 term at Northern Illinois University.
- Fall '08