| http://www.w3.org/ns/prov#value | - The reaction is preferably carried out using a base and a salt of hydroxylamine usually in the presence of a solvent, and the solvent preferably employed is water; an alcohol such as methanol, ethanol, tert-butanol and the like; an aliphatic carboxylic acid dialkylamide such as dimethyl formamide, dimethyl acetamide and the like; dimethyl sulfoxide; an ether such as tetrahydrofuran, dioxane, 1,2-d
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