Table 5 Synthesis of 5-substituted 1H-tetrazole derivatives catalyzed by Sm-bis(PYT)@boehmite.
Entry | Nitrile | Product | Time (h) | Yield (%)a | TON | TOF (h-1) | Melting point (°C) | Reported melting point (°C) |
|---|---|---|---|---|---|---|---|---|
1 |
|
| 1.5 | 96 | 49.7 | 33.2 | 212–215 | 212–21461 |
2 |
|
| 3.83 | 94 | 48.7 | 12.7 | 180–183 | 180–18360 |
3 |
|
| 2 | 91 | 47.1 | 23.6 | 223–225 | 224–22660 |
4 |
|
| 1.5 | 91 | 47.1 | 31.4 | 211–212 | 209–21270 |
5 |
|
| 0.92 | 92 | 47.7 | 52.0 | 230–233 | 231–23461 |
6 |
|
| 2.33 | 96 | 49.7 | 21.3 | 260–263 | 261–26461 |
7 |
|
| 8.42 | 89 | 46.1 | 5.48 | 217–219 | 217–21992 |
8 |
|
| 18.5 | 93 | 48.2 | 2.60 | 260–262 | 259–26148 |
9 |
|
| 7.5 | 94 | 48.7 | 6.49 | 150–153 | 149–15270 |
10 |
|
| 4 | 95 | 49.2 | 12.3 | 254–256 | 253–25793 |
11 |
|
| 11.17 | 92 | 47.7 | 4.27 | 238–241 | 241–24294 |
12 |
|
| 16 | 93 | 48.2 | 3.01 | 247–250 | 248–25193 |
13 |
|
| 44 | 73 | 37.9 | 0.86 | 246–249 | 245–24860 |
