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Optically active polymers via ring-opening metathesis polymerization: 2. Polymerization of enantiomerically pure ( ± )-endo-2-norbornenyl acetate

✍ Scribed by Thomas Steinhäusler; Franz Stelzer


Publisher
Elsevier Science
Year
1994
Weight
427 KB
Volume
90
Category
Article
ISSN
0304-5102

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Ring-opening metathesis polymerization o
✍ Kenneth J. Ivin; Luk-Mui Lam; John J. Rooney 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 361 KB

## Abstract The title monomers 1 and 2 were polymerized by Ru‐, Ir‐, Mo‐, W‐ and Re‐based metathesis catalysts to yield polymers with __cis__ contents ranging from 10% to at least 90% for 1 and 23–60% for 2. Assignments of the ^13^C NMR spectra were made. No significant head‐tail bias was observed

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13C NMR spectra of the three title polymers have been determined for polymers of different tacticities. Assignments to the various possible HWHT/TT and m/r dyad structures were made. These were facilitated by the use of optically active monomers in the case of 1 and 3. In the precursor polymers the