Comp. no | Time | Yield (%) | ||||
Micro. Irr. (120˚C - 130˚C) | Conv. H. (reflux) | Microwave irradiation | Conventional heating | |||
3 | 25 min | 8 h | 90a | 87c | 67a | 60c |
4 | 25 min | 8 h | 89 - 92a | 87c | 65a | 63c |
5 | 25 min | 8 h | 92a | 89c | 62a | 64c |
6 | 25 min | 8 h | 93 - 95a | 91c | 80a | 77c |
7 | 20 min | 4 h | 90 - 92b | 88c | 66b | 64c |
8 | 15 min | 4 h | 84 - 86b | 88c | 58b | 55c |
9 | 20 min | 4 h | 90 - 92b | 88c | 63b | 66c |
10 | 20 min | 6 h | 92 - 94a | 92c | 85a | 82c |
11 | 20 min | 6 h | 88a | 85c | 76a | 73c |
12 | 15 min | 4 h | 91 - 92b | 90c | 63b | 59c |
13 | 15 min | 4 h | 86 - 88b | 85c | 69b | 66c |
14 | 20 min | 4 h | 82b | 84c | 80b | 76c |
15 | 15 min | 6 h | 75 - 77b | 80c | 56b | 50c |
16 | 20 min | 6 h | 79b | 82c | 57b | 50c |