Table 9. Fiesselmann’s Thiophene Synthesis Using CsCO3/MgSO4 (1/2) in Methanol at Ambient Temperature100.
| R1 | R2 | yield (%) |
|---|---|---|
| Ph | CH(OEt)2 | 83 |
| Ph | CH2NHBoc | 89 |
| CF3 | CH(OEt)2 | 79 |
| C5H11 | CH(OEt)2 | 84 |
| R1 | R2 | yield (%) |
|---|---|---|
| Ph | CH(OEt)2 | 83 |
| Ph | CH2NHBoc | 89 |
| CF3 | CH(OEt)2 | 79 |
| C5H11 | CH(OEt)2 | 84 |