Table 3.
Latent ROMP of norbornene-derived monomers with catalyst 10.
| Entrya | Monomer | Temp. (°C) | Time (h) | Conversionb | Yieldc | Mn (g/mol)d | PDId |
|---|---|---|---|---|---|---|---|
| 1 | 5 | 25 | 24 | 0% | — | — | — |
| 2 | 5 | 85 | 2 | 99% | 81% | 24,300 | 1.16 |
| 3 | 6 | 25 | 37 | 0% | — | — | — |
| 4 | 6 | 85 | 2 | 95% | 94% | 36,900 | 1.27 |
| 5 | 7 | 25 | 24 | 0% | — | — | — |
| 6 | 7 | 85 | 2 | 99% | 48% | 2,000 | 3.25 |
| 7 | 8 | 25 | 37 | 0% | — | — | — |
| 8 | 8 | 85 | 2 | 78% | 68% | 3,800 | 1.79 |
a
The loading of catalyst 10 was 2 mol%. The substrate concentrations were 0.5M in THF, and the reactions were carried out sealed under a nitrogen atmosphere.
b
The conversion was determined by 1H NMR spectroscopy.
c
Isolated polymer yield.
d
The molecular weight and PDI were determined by GPC.