| http://www.w3.org/ns/prov#value | - The halogenation can be conducted in an inert organic solvent, for example. a hydrocarbon such as benzene, toluene and the like, a halogenated hydrocarbon such as carbon tetrachloride; 60 an ether such as diethylether, tetrahydrofuran, dioxane 65 at a temperature in the range of about room temperature and the reflux temperature of the reaction mixture.
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