Perchloric Acid Impregnated on Silica Ge
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Abu T. Khan; Subrata Ghosh; Lokman H. Choudhury
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Article
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2006
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John Wiley and Sons
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English
β 127 KB
## Abstract Perchloric acid adsorbed on silica gel (HClO~4~/SiO~2~) has been found to be a highly efficient and versatile catalyst for the Michael addition of thiols to a wide variety of conjugated alkenes such as Ξ±,Ξ²βunsaturated ketones, carboxylic esters, nitriles, amides and chalcones in dichlor