Table 4
Initial activity and conversion of the MoO2(acac)2/AlEt3/ZOH for 4-decyne metathesis
| Entry | Co-catalyst | pKa | TOF (h−1) | Conversion (%) |
|---|---|---|---|---|
| 1 | 2,3,4,5,6-F5-ArOH | 5.35 | 0 | - |
| 2 | 3,4-Cl2-ArOH | 8.5 | 53 | 26 |
| 3 | Resorcinola | 9.1 | 0 | - |
| 4 | 2-F-ArOH | 8.7 | 76 | 26 |
| 5 | 3-Cl-ArOH | 8.9 | 59 | 33 |
| 6 | 4-Cl-ArOH | 9.3 | 56 | 30.5 |
| 7 | ArOH | 9.9 | 22 | 19 |
| 8 | 2,6-(CH3)2-ArOH | 10.6 | 0 | - |
| 9 | (C6H5)3SiOH | ~ 12b | 12.5 | 5.0 |
| 10 | (C6H5)2Si(OH)2 a | ~ 12b | 0 | - |
| 11 | (CF3)(CH3)2COH | 11.8 | 0 | - |
| 12 | (CF3)CH2OH | 12.5 | 0 | - |