Table 3.
Compound | R1 | R2 | Microwave Heating | Conventional heating | ||
---|---|---|---|---|---|---|
Time | Yield (%) | Time | Yield (%) | |||
3 | p-SO2NH2 | 10 min | 60 | 48 h | 22 (ref:7) | |
4 | p-SO2NH2 | 15 min | 66 | 24 h | 2 (ref:7) | |
5 | p-SO2NH2 | 15 min | 90 | 24 h | 20 (ref:7) | |
6 | p-SO2NH2 | 10 min | 61 | 48 h | 19 (ref:7) | |
7 | p-SO2NH2 | 15 min | 67 | 24 h | 30 (ref:6) | |
8 | p-SO2NH2 | 15 min | 66 | 12 h | 13 (ref:7) | |
9 | p-SO2NH2 | 15 min | 67 | – | – | |
10 | o-SO2NH2 | 15 min | 55 | – | – | |
11 | p-COCH3 | 15 min | 74 | 2 h | 98 (ref: 3) | |
12 | p-SO2NH2 | 15 min | 40 | – | – | |
13 | p-OMe | 10 min | 58 | – | – | |
14 | p-Br | 10 min | 56 | – | – | |
15 | –H | p-SO2NH2 | 15 min | 48 | – | – |
16 | p-COOH | 15 min | 65 | – | – |