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Butylated hydroxy anisoles, are very valuable and dominant food anti-oxidants and they are produced by highly polluting Friedel-Crafts alkylation of 4-methoxyphenol using homogeneous acids or from hydroquinone in a two-step reaction using alkylation followed by etherification using dimethyl sulphate under alkaline conditions. The current paper reports the activities of Filtrol-24, K-10 montmorillonite...
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