| http://www.w3.org/ns/prov#value | - In one of the processes, the above phenol compound and a base for helping ultimate removal of a hydrogen halide which is, for example, an alkali metal hydroxide such as sodium hydroxide and potassium hydroxide or an organic base such as pyridine and triethylamine are dissolved into a solvent such as an alcohol, a halide of the above tetrasubstituted phosphonium ion dissolved in a suitable solvent
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