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)
Keywords:
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.