| http://www.w3.org/ns/prov#value | - The solvent to be employed here is not particularly limited so long as it does not inhibit the reaction and dissolves the starting material to some extent, and may be a halogenated hydrocarbon such as dichloromethane, chloroform or carbon tetrachloride; an ether such as diethyl ether, tetrahydrofuran or dioxane; or a nitrile such as acetonitrile, and is preferably a halogenated hydrocarbon (partic
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