prov:value
| - Suitable organic solvents for the reaction in an aqueous-organic or organic medium are lower alcohols, for example those having not more than 6 C atoms, benzyl alcohol, aliphatic and cyclic ethers, such as diethyl ether, di-n-propyl ether, di-isopropyl ether, tetrahydrofuran, tetrahydropyran and dioxan, and also aliphatic, cycloaliphatic or aromatic hydrocarbons, such as n-pentane, n-hexane, cyclo
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