• Domino Knoevenagel/Michael synthesis of 2,2'-arylmethylenebis(3- hydroxy-5,5-dimethyl-2-cyclohexen-1-one) derivatives catalyzed by silica-diphenic acid and their single crystal X-ray analysis

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      https://www.ias.ac.in/article/fulltext/jcsc/128/06/0967-0976

    • Keywords

       

      Crystal structure; single crystal X-ray analysis; 5,5-dimethyl-1,3-cyclohexanedione; heterogeneous catalyst.

    • Abstract

       

      An efficient and eco-friendly procedure has been developed for the synthesis of various 2,2'- arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives which were isolated and characterizedby melting point, IR,$^{ 1}H-NMR$,$^{ 13}$C-NMR and mass spectrometric techniques. Out of the fourteencompounds synthesized, four compounds yielded crystals suitable for single crystal X-ray analysis whichshowed that 2,2'-phenylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) crystallizes in the tetragonalsystem with space group I41/a, 2,2’-(3-nitrophenyl)methylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) crystallizes in the monoclinic system with space group P21/n, 2,2’-(4-nitrophenyl)methylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) crystallizes in the orthorhombic system with space group Pca21and 2,2’-(4-chlorophenyl)methylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) crystallizes in the monoclinicspace group P21/c.

    • Author Affiliations

       

      RUPALI VAID1 MONIKA GUPTA1 RAJNI KANT2 VIVEK K GUPTA2

      1. Department of Chemistry, University of Jammu, Jammu 180 006, India
      2. Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India
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  • Journal of Chemical Sciences | News

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