Entry | Product | Time (h) | Yield (%)a | m.pb. (lit)c(°C) |
---|
1 | 
| 4 | 90 | 235–236 (232–234)c [16] |
2 | 
| 5 | 88 | 214–215 (213–214)c [16] |
3 | 
| 5 | 90 | 183–185b |
4 | 
| 4.5 | 87 | 214–216b |
5 | 
| 4 | 90 | 188–190c |
6 | 
| 5 | 86 | 224–226b |
7 | 
| 6 | 85 | 191–194b |
8 | 
| 5 | 90 | 201–204b |
9 | 
| 6 | 90 | 224–226b |
10 | 
| 5 | 85 | 204–207b |
11 | 
| 6 | 75 | 215–218b |
12 | 
| 6 | 90 | 227–230b |
13 | 
| 4 | 70 | 228–230b |
- aIsolated yield, bnovel product, cknown product