| http://www.w3.org/ns/prov#value | - It is generally known that the reactivity of an organic halide with an alkali metal cyanate is very poor, and mere mixing and heating of these materials do not induce reaction, and that the desired isocyanate can scarcely be obtained even when the reaction is carried out in nonpolar or weakly polar solvent such as water, ethers, alcohols, esters, ketones, nitriles, hydrocarbons, halogenated hydroc
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