| http://www.w3.org/ns/prov#value | - Examples of polar aprotic solvents are chloroform, tetrahydro-furan, dimethylsulfoxide and dimethylformamide.In a presently preferred embodiment of this invention, the solvent is a protic solvent, preferably water or an alcohol such as ethanol.The reaction is carried out at temperatures greater than room temperature.
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