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- W2025958982 abstract "The synthesis of the designer drug 4-methylthioamphetamine (4-MTA) has been carried out using the well-known Leuckart reaction in four versions. The treatment of 4-methylthiophenylacetone with formamide, mixture of formamide/formic acid, ammonium formate, and mixture of ammonium formate and formic acid followed by acid hydrolysis brought about the formation of 4-MTA contaminated with a number of impurities. The gas chromatography mass–spectrometry (GC–MS) analysis of the reaction mixtures allowed identification of the most prominent impurities, such as diasteromers of N,N-di-[β-(4-methylthiophenyl)isopropyl]amine, N,N-di-[β-(4-methylthiophenyl)isopropyl]methylamine, N,N-di-[β-(4-methylthiophenyl)isopropyl]formamide, the Schiff bases derived from 4-MTA and 4-methylbenzaldehyde (benzaldimine) and 4-methylthiophenylacetone (ketimine) as well as some heterocycles: 4-methyl-5-(4′-methylthiophenyl)pyrimidine, 4-(4′-methylthiobenzyl)pyrimidine, 2,6-dimethyl-3,5-di-(4′-methylthiophenyl)pyridine, 2,4-dimethyl-3,5-di-(4′-methylthiophenyl)pyridine. The correctness of identification was confirmed by independent synthesis of these compounds. Each synthesized reference compound was characterized by means of MS, 1H and 13C NMR, and IR methods. The stereochemistry of (RR/SS) diasteromer of N,N-di-[β-(4-methylthiophenyl)isopropyl]amine was confirmed by a crystallographic method." @default.
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- W2025958982 date "2012-03-01" @default.
- W2025958982 modified "2023-10-03" @default.
- W2025958982 title "Identification and synthesis of by-products found in 4-methylthioamphetamine (4-MTA) produced by the Leuckart method" @default.
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- W2025958982 doi "https://doi.org/10.1016/j.forsciint.2011.09.005" @default.
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