prov:value
| - As to the inert solvent used in this reaction, an aromatic hydrocarbon such as benzene, toluene, xylene or the like, a lower alcohol such as methanol, ethanol, isopropanol, butanol or the like, further acetic acid, dimethyl sulfoxide, dimethylformamide, hexamethylphosphoric triamide or the like can be exemplified.
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