Efficient hydroalkoxylation of alkenes to generate octane-boosting ethers using recyclable metal triflates and highly active metal triflate/ Brønsted acid-assisted catalysts
- Publication Type:
- Journal Article
- Fuel Processing Technology, 2012, 94 (1), pp. 75 - 79
- Issue Date:
gem-Disubstituted alkenes are directly and readily etherified with alcohols using Al(OTf)3and Zr(OTf)4as recyclable Lewis acid catalysts. In contrast, primary or secondary alkene analogues were inert under these conditions, enabling excellent chemoselectivity. Lanthanide triflates are inactive as catalysts for such reactions, as is phosphoric acid. But a combination of these two otherwise inactive entities led to an 'assisted acidity' scenario that saw significant unmatched catalyst activity. All catalysts of this study are recyclable a number of times without loss of activity. © 2011 Elsevier B.V. All rights reserved.
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