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Silica-Sulfuric Acid: A Versatile Reagent

✍ Scribed by Manoj B. Gawande

Publisher
John Wiley and Sons
Year
2007
Weight
11 KB
Volume
38
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

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**The title reagent K/SiO~2~ has a greater reactivity and a different selectivity compared to metallic potassium**. It is particularly suitable for dimerizations: benzophenone can be converted with K/SiO~2~ into benzopinacol in 72% yield; bromo‐ and iodobenzene afford biphenyl in yields of more than