Table 1.
Thiosemicarbazone yields and reaction times obtained under microwave irradiation using ethanol as solvent and in solvent free conditions (7–42), and under traditional reflux (7–10 and 16–19).
| Compound | Time (min) | Yield (%) | Compound | Time (min) | Yield (%) |
|---|---|---|---|---|---|
| 7 | 3 a /40 b /480 c | 96 a /86 b /83 c | 25 | 3 a /40 b | 93 a /82 b |
| 8 | 3 a /40 b /480 c | 92 a /79 b /74 c | 26 | 3 a /40 b | 86 a /70 b |
| 9 | 3 a /40 b /480 c | 97 a /71 b /70 c | 27 | 3 a /40 b | 91 a /78 b |
| 10 | 3 a /40 b /480 c | 90 a /88 b /68 c | 28 | 3 a /40 b | 90 a /82 b |
| 11 | 3 a /20 b | 89 a /54 b | 29 | 3 a /20 b | 96 a /99 b |
| 12 | 3 a /20 b | 96 a /83 b | 30 | 3 a /20 b | 97 a /99 b |
| 13 | 3 a /20 b | 94 a /71 b | 31 | 3 a /20 b | 92 a /94 b |
| 14 | 3 a /20 b | 92 a /70 b | 32 | 3 a /20 b | 91 a /88 b |
| 15 | 3 a /20 b | 95 a /83 b | 33 | 3 a /20 b | 94 a /97 b |
| 16 | 3 a /40 b /480 c | 91 a /62 b /49 c | 34 | 3 a /40 b | 89 a /77 b |
| 17 | 3 a /40 b /480 c | 97 a /93 b /78 c | 35 | 3 a /40 b | 88 a /84 b |
| 18 | 3 a /40 b /480 c | 88 a /76 b /67 c | 36 | 3 a /40 b | 90 a /57 b |
| 19 | 3 a /40 b /480 c | 96 a /82 b /63 c | 37 | 3 a /40 b | 96 a /79 b |
| 20 | 3 a /20 b | 98 a /73 b | 38 | 3 a /20 b | 95 a /70 b |
| 21 | 3 a /20 b | 93 a /52 b | 39 | 3 a /20 b | 93 a /75 b |
| 22 | 3 a /20 b | 94 a /78 b | 40 | 3 a /20 b | 91 a /81 b |
| 23 | 3 a /20 b | 87 a /52 b | 41 | 3 a /20 b | 89 a /79 b |
| 24 | 3 a /20 b | 95 a /85 b | 42 | 3 a /20 b | 93 a /62 b |
a Solvent free conditions; b using ethanol as solvent; c using traditional reflux.