Table 1.
Designation of R1 and R2 for products 4a–h.
| Compound | R1 | R2 |
|---|---|---|
| 4a | C6H5- | C6H5- |
| 4b | 4-FC6H4- | C6H5- |
| 4c | 3-ClC6H4- | C6H5- |
| 4d | 4-CH3OC6H4- | C6H5- |
| 4e | C6H5- | 4-FC6H4- |
| 4f | 4-FC6H4- | 4-FC6H4- |
| 4g | 3-ClC6H4- | 4-FC6H4- |
| 4h | 4-CH3OC6H4- | 4-FC6H4- |
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