Al(NO<sub>3</sub>)<sub>3</sub> · 9H<sub>2</sub>O: An Efficient Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones Both under Reflux or Solvent-Free Conditions

<table>Proposed mechanism for the aluminum nitrate-catalyzed Biginelli reaction.</table>

Journal of Chemistry

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Figure 2

Figure 2: Al(NO<sub>3</sub>)<sub>3</sub> · 9H<sub>2</sub>O: An Efficient Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones Both under Reflux or Solvent-Free Conditions 

Figure 2 | Al(NO3)3 · 9H2O: An Efficient Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Both under Reflux or Solvent-Free Conditions 