prov:value
| - Also, the reaction with the compound [V] wherein Z3 is halogen atom, arylsulfonyloxy or alkylsulfonyloxy can be carried out in an appropriate solvent (acetone, ethanol, THF, dimethyl sulfoxide, DMF, dioxane, N,N-dimethylacetamide, N-methylpyrrolidone or the like, or a mixed solvent thereof) in the presence of a base such as potassium carbonate, potassium tert-butoxide, sodium hydride, cesium carbo
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