Table 1. Optimization with the BDMS Catalyst.
entry | BDMS (mol %) | solvent | time (minutes) | yield (%) |
---|---|---|---|---|
1 | 5 | 5 | 55 | |
2 | 10 | 5 | 70 | |
3 | 10 | 10 | 95 | |
4 | 15 | 20 | 85 | |
5 | 20 | 60 | 90 | |
6 | 10 | CH3OH | 120 | 50 |
7 | 10 | CH2Cl2 | 120 | 40 |
8 | 10 | CHCl3 | 60 | 60 |
9 | 10 | C2H5CO2CH3 | 120 | 70 |
10 | 10 | CH3CN | 60 | 50 |