Table 2.
Compd. | R1- | R2- | R3- | Yields /% b |
---|---|---|---|---|
4a | 2-F | 4-CF3C6H5 | CH3 | 83.5 |
4b | H | 4-CF3C6H5 | CH3 | 81.3 |
4c | 2-F | 6-methoxybenzothiazole-2-yl | CH3 | 76.5 |
4d | 2-F | 3-NO2C6H5 | CH3 | 79.8 |
4e | 3,4,5-trimethoxy | 4-CF3C6H5 | CH3 | 70.6 |
4f | 4-F | 4-CF3C6H5 | CH3 | 73.6 |
4g | 2-CF3 | 4-CF3C6H5 | CH3 | 56.8 |
4h | 3-CF3 | 4-CF3C6H5 | CH3 | 79.2 |
4i | 3,4,5-trimethoxy | 4-CF3C6H5 | C2H5 | 78.6 |
4j | 2-F | 4-CF3C6H5 | C2H5 | 81.6 |
4k | H | 4-CF3C6H5 | C2H5 | 82.8 |
4l | 2-F | 3-NO2C6H5 | C2H5 | 80.5 |
a Reaction conditions: stirred under microwave irradiation in a DiscoveryTM LabMate instrument at 50W; b Yields of isolated products.