Table 3 Effect of temperature in toluene solvent
From: Zirconia-based catalyst for the one-pot synthesis of coumarin through Pechmann reaction
Entry | Reactant | Catalyst | Temperature (°C) | %Yield | Time (min.) |
|---|---|---|---|---|---|
1 | Resarcinol + ethylacetoacetate | ZrO2-TiO2 | 100 | 95 | 20 |
2 | Resarcinol + ethylacetoacetate | ZrO2-TiO2 | 80 | 95 | 35 |
3 | Resarcinol + ethylacetoacetate | ZrO2-TiO2 | 60 | 95 | 110 |
4 | Resarcinol + ethylacetoacetate | ZrO2-TiO2 | 45 | 83 | 130 |
5 | Resarcinol + ethylacetoacetate | ZrO2-ZnO | 100 | 70 | 30 |
6 | Resarcinol + ethylacetoacetate | ZrO2-ZnO | 80 | 63 | 50 |
7 | Resarcinol + ethylacetoacetate | ZrO2-ZnO | 60 | 55 | 140 |
8 | Resarcinol + ethylacetoacetate | ZrO2-ZnO | 45 | 40 | 170 |
9 | Resarcinol + ethylacetoacetate | Without catalyst | 80 | N.R. | 240 |