催化学报 ›› 2015, Vol. 36 ›› Issue (4): 520-549.DOI: 10.1016/S1872-2067(14)60299-0

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Silica supported Brönsted acids as catalyst in organic transformations: A comprehensive review

Manpreet Kaur, Sahil Sharma, Preet M. S. Bedi   

  1. Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar-143005, Punjab, India
  • 收稿日期:2014-11-11 修回日期:2015-01-13 出版日期:2015-03-23 发布日期:2015-03-23
  • 通讯作者: Sahil Sharma
  • 基金资助:

    This work was supported by Mr. Gurpreet Singh, Assistant Professor, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar.

Silica supported Brönsted acids as catalyst in organic transformations: A comprehensive review

Manpreet Kaur, Sahil Sharma, Preet M. S. Bedi   

  1. Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar-143005, Punjab, India
  • Received:2014-11-11 Revised:2015-01-13 Online:2015-03-23 Published:2015-03-23
  • Supported by:

    This work was supported by Mr. Gurpreet Singh, Assistant Professor, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar.

摘要:

Brönsted acid catalysts have been used in a number of organic transformations. To overcome limitations, such as toxicity, volatility, high price and hazardous nature of the conventional methods, the catalysts are adsorbed on silica gel to give the benefits and advantages of ready availability, simple work-up procedure, long catalytic life, environment-friendliness, good to excellent yields and recyclability. The uses of such catalysts have gained importance worldwide. This article describes some of the important silicated catalysts, namely, heteropolyacids, polyphosphoric acid, perchloric acid, fluoroboric acid, and silicated sulphuric acid. These catalysts have been used in a number of organic reactions to yield compounds that are important in the chemical and pharmaceutical industries. We summarize the beneficial effects of these catalysts and the reports that have been published on them in the past several years. In the present review, the description of the catalysts are introduced followed by a recent research history, and a comparison between the silica supported catalysts and other (polymer) supported catalysts. The article ends up giving the advantages of these catalytic systems over the conventional catalyst.

关键词: Brönsted acids, Silicated catalysts, Recyclability, Chemoselectivity, Conventional

Abstract:

Brönsted acid catalysts have been used in a number of organic transformations. To overcome limitations, such as toxicity, volatility, high price and hazardous nature of the conventional methods, the catalysts are adsorbed on silica gel to give the benefits and advantages of ready availability, simple work-up procedure, long catalytic life, environment-friendliness, good to excellent yields and recyclability. The uses of such catalysts have gained importance worldwide. This article describes some of the important silicated catalysts, namely, heteropolyacids, polyphosphoric acid, perchloric acid, fluoroboric acid, and silicated sulphuric acid. These catalysts have been used in a number of organic reactions to yield compounds that are important in the chemical and pharmaceutical industries. We summarize the beneficial effects of these catalysts and the reports that have been published on them in the past several years. In the present review, the description of the catalysts are introduced followed by a recent research history, and a comparison between the silica supported catalysts and other (polymer) supported catalysts. The article ends up giving the advantages of these catalytic systems over the conventional catalyst.

Key words: Brönsted acids, Silicated catalysts, Recyclability, Chemoselectivity, Conventional