Table 2.
Yield (%), Mp (°C), and Elemental analysis of 4a–i.
| Compd. No | Yield (%) | Mp (°C) | Elemental Analysis Calcd. (Found) | ||
|---|---|---|---|---|---|
| C | H | N | |||
| 4a | 88 | 174–176 | 61.31 (61.60) | 5.14 (5.34) | 10.21 (10.00) |
| 4b | 81 | 178–180 | 62.86 (63.02) | 5.73 (5.96) | 9.56 (9.581) |
| 4c | 83 | 168–170 | 66.52 (66.67) | 5.17 (5.24) | 8.62 (8.88) |
| 4d | 76 | 216–218 | 62.11 (62.38) | 5.45 (5.66) | 9.88 (10.07) |
| 4e | 82 | 154–156 | 66.52 (66.33) | 5.17 (5.26) | 8.62( 8.90) |
| 4f | 88 | 154–156 | 61.31 (61.09) | 5.14 (5.23) | 10.21 (10.48) |
| 4g | 86 | 118–120 | 62.11 (62.37) | 5.45 (5.67) | 9.88 (10.04) |
| 4h | 83 | 180–182 | 63.56 (63.38) | 6.00 (6.13) | 9.27 (9.53) |
| 4i | 78 | 238–240 | 63.85 (64.06) | 5.58 (5.65) | 9.31 (9.04) |