Table 6. Alternating ROMP of ONC and DHF promoted by catalysts 1, 2 and HGII.
| ||||||
|---|---|---|---|---|---|---|
| Entry | Catalyst | [ONC]/[DHF]/[cat] | Time (h) | Alternating diadsa [%] | M n b (g mol−1) | Ð b |
| 1 | 1a | 120 : 120 : 1 | 3 | 76 (53) | 4.1 × 104 | 1.4 |
| 2 | 1b | 120 : 120 : 1 | 3 | 68 (49) | 5.9 × 104 | 2.4 |
| 3 | 2a | 120 : 120 : 1 | 3 | 66 (75) | 5.7 × 104 | 2.3 |
| 4 | 2b | 120 : 120 : 1 | 3 | 82 (76) | 3.4 × 104 | 2.0 |
| 5 | HGII | 120 : 120 : 1 | 3 | 84 (27) | 1.0 × 104 | 1.7 |
| 6 | 2b | 120 : 240 : 1 | 12 | >98 (78) | 3.5 × 104 | 1.9 |
| 7 | HGII | 120 : 240 : 1 | 12 | >98 (21) | 7.1 × 103 | 2.2 |
a
Determined using 1H-NMR. The value in parenthesis is the percentage of Z double bonds.
b
Determined using THF size-exclusion chromatography (SEC) calibrate utilizing polystyrene standards.