Regioselective nitration of phenol over solid acid catalystsSharda P , Dagade and V S, Kadam and Mohan K , Dongare (2002) Regioselective nitration of phenol over solid acid catalysts. Catalysis Communications , 3 (2). pp. 67-70.
AbstractPhenol is selectively nitrated in liquid phase to ortho-nitrophenol in high yield using dilute nitric acid over solid acid catalysts. Zeolite H-beta was found to be a very active catalyst for nitration of phenol to ortho-nitrophenol at room temperature in carbon tetrachloride as a solvent. Compared to the conventional process, phenol nitration over solid acid catalyst is a clean and environment friendly process with a simpler workup procedure for quantitative isolation of the products
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