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Keywords
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Methadone, solvent eutectic system, green synthesis, pain medicine, opioids
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Abstract
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Eutectic solvents (DES), have attracted much attention in the last decade.With the advantages of nonflammability,
thermal and chemical stability, high solubility and partial vapor pressure, non-toxicity and reasonable prices, these solvents
are suggested as useful solvents. On the other hand, the eutectic solvents developed by Abbott are the new generation of ionic
liquids. The mixture of eutectics is from an ammonium salt and a hydrogen bonding compound such as urea, acid, amine, and
non-toxic amines. Choline chloride and urea, are quite environmentally friendly and are known practically as green solvents.
The purpose of the present research is to present the synthesis of diphenyl acetonitrile with 1-dimethylamino-2-chloropropane
by a eutectic’s solvent. In addition, methadone is synthesized from the reaction of 2,2-Diphenyl-4-dimethylaminovaleronitrile
with ethyl magnesium bromide in the presence of solvent eutectic, which is in optimal and environmentally compatible
conditions and by principles of green chemistry.
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