Application of PVPP-OXA as an efficient catalyst for the synthesis of mono and bulky 1,8-dioxooctahydroxanthenes

Subject Areas : Polymer

Reza  Dezhanga ¹ (Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran)
Masoud  Mokhtary ² (Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran)

Received: 2019-09-09 Accepted : 2019-09-09 Published : 2019-10-01

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Abstract :

An efficient method for the synthesis of mono and bulky 1,8-dioxooctahydroxanthenes was developed by the reaction of dimedone or 1,3-cyclohexadione and aldehydes or some bisaldehydes in the presence of polyvinylpolypyrrolidone supported oxalic acid (PVPP-OXA) as a new polymeric catalyst in ethanol at room temperature. Polyvinylpolypyrrolidone supported oxalic acid was characterized by FT-IR, and TGA analysis. Clean methodologies, simple preparation of the catalyst, high yields, environment-friendly and reusable catalyst are some advantages of this work.