| http://www.w3.org/ns/prov#value | - These reactions are preferably conducted in an organic inert and polar solvent, for example in an ether such as tetrahydrofuran, a sulfoxide such as dimethyl sulfoxide, a sulfone such as tetramethylene sulfone, a N-substituted carboxamide, or lactam such as dimethyl formamide or N-methylpyrrolidone.
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