prov:value
| - When the compound (XIV) is used in free form in the reaction, the reaction is preferably carried out in the presence of a base such as alkali metal alkoxide (e.g., sodium methoxide, potassium methoxide, sodium ethoxide, potassium ethoxide, potassium t-butoxide, etc.), alkali metal hydroxide (e.g., sodium hydroxide, potassium hydroxide, etc.) or the like.
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