期刊
TETRAHEDRON LETTERS
卷 48, 期 7, 页码 1277-1280出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2006.12.030
关键词
solid acids; protecting groups; green chemistry; solid sulphonic acid; hexamethyldisilazane; catalysts
Silylation of alcohols with hexamethyldisilazane (HMDS) in dichloromethane provides the corresponding silyl ethers in almost quantitative yields at room temperature using 1-3 mol% of sulfonic acid - function alized silica. Additionally, the catalyst displays a high activity and thermal stability (up to 240 degrees C) and it can be easily recovered and reused for at least 20 reaction cycles without loss of reactivity. (c) 2007 Elsevier Ltd. All rights reserved.
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