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Table 4 Effect of temperature in an ethanol 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 97 20
2 Resarcinol + ethylacetoacetate ZrO2-TiO2 80 95 50
3 Resarcinol + ethylacetoacetate ZrO2-TiO2 60 92 150
4 Resarcinol + ethylacetoacetate ZrO2-TiO2 45 80 160
5 Resarcinol + ethylacetoacetate ZrO2-ZnO 100 74 40
6 Resarcinol + ethylacetoacetate ZrO2-ZnO 80 67 60
7 Resarcinol + ethylacetoacetate ZrO2-ZnO 60 60 120
8 Resarcinol + ethylacetoacetate ZrO2-ZnO 45 43 150
9 Resarcinol + ethylacetoacetate Without catalyst 80 N.R. 240
  1. N.R. no reaction