Sulfuric acid ([3-(3-silicapropyl)-sulfanyl]propyl)ester as recyclable catalyst for the silylation of hydroxyl groups

Authors

• Farid Rohandeh ¹
• Dariush Saberi ²
• Khodabakhsh Niknam ³

1. Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
2. Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169 Iran.
3. Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran.

Abstract

Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl]ester (SASPSPE) is employed as a recyclable catalyst for the silylation of hydroxyl groups. A good range of primary, secondary alcohols and phenolic hydroxyl groups were effectively converted into their corresponding trimethylsilyl ethers with hexamethyldisilazane in the presence of catalytic amounts of SASPSPE at room temperature with short reaction times in good to excellent yields. This heterogeneous catalyst was recycled for nine runs without losing its catalytic activity.

Keywords

• Catalyst
• Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester
• Silylation
• Hydroxyl group
• Heterogenous solid acid.