催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (9): 1477-1483.DOI: 10.1016/S1872-2067(10)60260-4

• 研究论文 • 上一篇    下一篇

Sulfuric Acid ([3-(3-Silicapropyl)sulfanyl]propyl)ester as a Recyclable Catalyst for the Synthesis of 4,4'-(Arylmethylene)bis(1H-pyrazol-5-ols)

Shekoofeh TAYEBI1, Mojtaba BAGHERNEJAD1, Dariush SABERI2, Khodabakhsh NIKNAM1,2,*   

  1. 1Department of Chemistry, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran; 2Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
  • 收稿日期:2011-03-09 修回日期:2011-07-08 出版日期:2011-09-09 发布日期:2015-01-24

Sulfuric Acid ([3-(3-Silicapropyl)sulfanyl]propyl)ester as a Recyclable Catalyst for the Synthesis of 4,4'-(Arylmethylene)bis(1H-pyrazol-5-ols)

Shekoofeh TAYEBI1, Mojtaba BAGHERNEJAD1, Dariush SABERI2, Khodabakhsh NIKNAM1,2,*   

  1. 1Department of Chemistry, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran; 2Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
  • Received:2011-03-09 Revised:2011-07-08 Online:2011-09-09 Published:2015-01-24

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摘要： Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester is employed as a recyclable catalyst for the condensation reaction between aromatic aldehydes and 3-methyl-l-phenyl-5-pyrazolone. This condensation reaction was performed in ethanol under refluxing conditions giving 4,4'-alkylmethylene-bis(3-methyl-5-pyrazolones) in 74-90% yields. The heterogeneous catalyst was recycled and used in eleven runs for the reaction between benzaldehyde and 3-methyl-l-phenyl-5-pyrazolone without losing catalytic activity.

关键词: sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester, silica-bonded N-propyl sulfamic acid, 3-methyl-l-phenyl-5-pyrazolone, aldehydes

Abstract: Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester is employed as a recyclable catalyst for the condensation reaction between aromatic aldehydes and 3-methyl-l-phenyl-5-pyrazolone. This condensation reaction was performed in ethanol under refluxing conditions giving 4,4'-alkylmethylene-bis(3-methyl-5-pyrazolones) in 74-90% yields. The heterogeneous catalyst was recycled and used in eleven runs for the reaction between benzaldehyde and 3-methyl-l-phenyl-5-pyrazolone without losing catalytic activity.

Key words: sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester, silica-bonded N-propyl sulfamic acid, 3-methyl-l-phenyl-5-pyrazolone, aldehydes