Silica-bonded S -sulfonic acid as a recyclable catalyst for the silylation of hydroxyl groups with hexamethyldisilazane (HMDS) (original) (raw)
2010, Canadian Journal of Chemistry
AI-generated Abstract
The development of heterogeneous catalysts for fine chemical synthesis has become a major area of research. The potential advantages of these materials over homogeneous systems (simplified recovery and reusability, the potential for incorporation in continuous reactors and micro reactors) can lead to novel and environmentally benign chemical procedures for academia and industry. From this viewpoint, catalytic reactions lead to valuable processes, because the use of stoichiometric reagents that are often toxic poses inherent limitations from both an economical and an environmental viewpoint and in specific relation to product purification and waste management. In view of this, several types of solid sulfonic acid functionalized silica (both amorphous and ordered) have been synthesized and applied as an alternative to traditional sulfonic acid resins and homogeneous acids in catalyzing chemical transformations. Application of solid acids in organic transformation has an important role, because these species have many advantages, such as, simplicity in handling, decreased reactor and plant corrosion problems, and more environmentally safe disposal.
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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights (for review): An overview on the application of silica-functionalized sulfonic acid was described. SiO 2-Pr-SO 3 H was proved to be a highly effective solid acid catalyst. The role of SiO 2-Pr-SO 3 H in various organic reactions was described.
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