synthesis of 4,4′-(arylmethylene)bis(1h-pyrazol-5-ols) via multi-component reactions by using silica-bonded sulfamic acid derivatives

اسناد مشابه

• Synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ols) via multi-component reactions by using silica-bonded sulfamic acid derivatives

  مقاله۲۰۱۲Iranian Journal of CatalysisKhodabakhsh Niknam, Shekoofeh Tayebi

  The one-pot, multi-component synthesis of 4,4′-(arylmethylene)bis(1 H -pyrazol-5-ols) by tandem Knoevenagel-Michael reaction of phenylhydrazine, ethyl acetoacetate and aldehydes in the presence of silica-bonded N -propylpiperazine sulfamic acid (SBPPSA) as a recyclable solid acid

• Synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ols) via multi-component reactions by using silica-bonded sulfamic acid derivatives

  مقاله۲۰۱۲Iranian Journal of CatalysisKhodabakhsh Niknam, Shekoofeh Tayebi

  The one-pot, multi-component synthesis of 4,4′-(arylmethylene)bis(1 H -pyrazol-5-ols) by tandem Knoevenagel-Michael reaction of phenylhydrazine, ethyl acetoacetate and aldehydes in the presence of silica-bonded N -propylpiperazine sulfamic acid (SBPPSA) as a recyclable solid acid

• synthesis of bis-4-hydroxycoumarins via a multi component reaction using silica boron-sulfuric acid nanoparticles (sbsans) as an efficient heterogeneous solid acid catalyst

  مقالهorganic chemistry researchhabib ollah foroughi, department of scince, islamic azad university, fasa branch ali khalafi-nezhad, department of chemistry, shiraz university, shiraz,71454, i.r.iran

  the silica boron sulfuric acid nanoparticles (sbsans) as an efficient heterogeneous solid acid catalyst with both brønsted and lewis acidic sites catalyzed the preparation of bis-4-hydroxycoumarin derivatives using reaction of aldehydes and 4-hydroxycoumarin under mild and solven

• Synthesis of Bis-4-hydroxycoumarins via a Multi Component Reaction Using Silica Boron-sulfuric Acid Nanoparticles (SBSANs) as an Efficient Heterogeneous Solid Acid Catalyst

  مقاله۲۰۱۶Organic Chemistry ResearchAli Khalafi-Nezhad, Habib Ollah Foroughi

  The silica boron sulfuric acid nanoparticles (SBSANs) as an efficient heterogeneous solid acid catalyst with both Brønsted and Lewis acidic sites catalyzed the preparation of bis-4-hydroxycoumarin derivatives using reaction of aldehydes and 4-hydroxycoumarin under mild and solven

• Synthesis of Benzopyrano[2,3-d]pyrimidines Using Silica-Bonded N-Propyldiethylenetriamine Sulfamic Acid (SPDTSA) As Heterogeneous Solid Acid Catalyst under Solvent-Free Conditions

  مقاله۲۰۱۵Organic Chemistry ResearchKhodabakhsh Niknam, Nassim Borazjani

  Silica-bonded N -propyldiethylenetriamine sulfamic acid (SPDTSA) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3- d ]pyrimidines through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines at roo

• synthesis of benzopyrano[2,3-d]pyrimidines using silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) as heterogeneous solid acid catalyst under solvent-free conditions

  مقاله۲۰۱۵organic chemistry researchkhodabakhsh niknam, nassim - borazjani

  silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines at room t