Table 2.
Synthesis of quinoxaline derivatives catalyzed by SBSSA at room temperature.
| Entry | Dicarbonyl compound | Diamine | Product | Time(min) | Yields(%)a |
|---|---|---|---|---|---|
| 5a |
|
|
|
5 | 96 |
| 5b |
|
|
|
8 | 95 |
| 5c |
|
 |
 |
10 | 90 |
| 5d | |
 |
|
200 | 90 |
| 5e |
|
 |
|
15 | 91 |
| 5f |
|
 |
|
20 | 90 |
| 5g |
|
|
|
220 | 93 |
| 5h |
|
|
|
30 | 85 |
| 5i |
|
|
|
35 | 85 |
| 5j |
|
|
|
5 | 94 |
| 5k |
|
|
|
7 | 92 |
| 5l |
|
|
|
6 | 95 |
| 5m |
|
|
|
8 | 92 |
| 5n |
|
|
|
15 | 91 |
| 5o |
|
|
|
20 | 93 |
| 5p |
|
|
|
15 | 91 |
aIsolated yield.