| http://www.w3.org/ns/prov#value | - According to these three processes, the acylation reaction is performed in an anhydrous organic solvent such as, for example, a chlorinated hydrocarbon such as dichloromethane or chloroform, a linear or cyclic oxide ether such as 1,2-dimethoxyethane, tetrahydrofuran or dioxane, a polar aprotic solvent such as pyridine, dimethyl sulfoxide or dimethylformamide or any other suitable solvent, or alter
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