Facile One‐pot Synthesis of Arylsulfonyl‐4H‐pyrans Catalyzed by Ru Loaded Fluorapatite
Surya Narayana Maddila, Suresh Maddila, Nagaraju Kerru, Sandeep V. H. S. Bhaskaruni, Sreekantha B. Jonnalagadda
Abstract
Abstract We report a novel ecofriendly cascade reaction for the synthesis of arylsulfonyl‐4H‐pyran derivatives by a three component fusion reaction of chosen aldehyde, dimedone and phenylsulphonyl acetonitrile at room temperature using ruthenia doped fluorapatite (RuO 2 /FAp) as recyclable catalyst. Different percentages of RuO 2 /FAp materials were prepared and characterized by FT‐IR, P‐XRD, BET, SEM‐EDX and TEM analysis. Attractive features of the synthetic approach are operational simplicity, cost‐effectiveness, short reaction time and excellent yields. Easily recoverable and reusable catalyst material without any deceptive loss of catalytic activity up to seven cycles is additional benefit.