Table 2 Solvent and visible-light optimization table
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|---|---|---|---|---|
Entry | Light Source | Solvent (3Â mL) | Time (min) | Isolated Yields (%) |
1 | White light (18 W) | H2O/EtOH (1:1) | 10 | 83 |
2 | White light (18 W) | H2O/EtOH (1:2) | 10 | 79 |
3 | White light (18 W) | H2O/EtOH (2:1) | 10 | 94 |
4 | White light (18 W) | EtOH | 10 | 61 |
5 | White light (18 W) | H2O | 10 | 74 |
6 | White light (18 W) | MeOH | 15 | 56 |
7 | White light (18 W) | CH2Cl2 | 30 | 26 |
8 | White light (18 W) | CH3CN | 15 | 50 |
9 | White light (18 W) | – | 20 | 72 |
10 | White light (18 W) | CHCl3 | 30 | 21 |
11 | White light (18 W) | EtOAc | 10 | 62 |
12 | White light (18 W) | DMSO | 25 | 47 |
13 | White light (18 W) | DMF | 40 | 25 |
14 | White light (18 W) | Toluene | 25 | 43 |
15 | White light (18 W) | THF | 40 | 28 |
16 | White light (10 W) | H2O/EtOH (2:1) | 10 | 75 |
17 | White light (12 W) | H2O/EtOH (2:1) | 10 | 82 |
18 | White light (20 W) | H2O/EtOH (2:1) | 10 | 94 |
19 | – | H2O/EtOH (2:1) | 25 |  < 5 |
20 | Green light (18 W) | H2O/EtOH (2:1) | 10 | 83 |
21 | Blue light (18 W) | H2O/EtOH (2:1) | 10 | 80 |
