Potassium Metal Dispersed on Silica: A V
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Jaacov Levy; Dov Tamarkin; Henry Selig; Prof. Dr. Mordecai Rabinovitz
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Article
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1981
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John Wiley and Sons
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English
β 142 KB
π 2 views
**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; bromoβ and iodobenzene afford biphenyl in yields of more than