Application of PVPP-OXA as an efficient catalyst for the synthesis of mono and bulky 1,8-dioxooctahydroxanthenes
الموضوعات :Reza Dezhanga 1 , Masoud Mokhtary 2
1 - Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
2 - Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
الکلمات المفتاحية:
ملخص المقالة :
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.
