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- W4386775184 endingPage "136652" @default.
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- W4386775184 abstract "The search for analogs of compounds with proved pharmacological activity frequently starts by obtaining those that result from simple chemical substitutions, have structural and mechanical characteristics suitable for inclusion in a formulation and close similarity with related lead compounds. With this aim, the isosteric replacement of the carbonyl functional group of paracetamol to obtain solid thioparacetamol was achieved through microwave mediated thionation of parent compound in very good yield (85%). A thorough characterization of the compound prepared was performed by GC/MS spectrometry, FTIR and NMR (1H, 13C, COSY, HSQC and HMBC) spectroscopies and quantum chemical calculations derived from density functional theory. From the experimental and theoretical spectra, it was evidenced that the structural, vibrational and conformational properties of this compound vary whether the sample is solved in a solvent or not. The anti form (anti of the C=S and N-H bonds) was the preferred conformational isomer in the solid phase, while a conformational equilibrium of anti and syn forms was found for samples solved in different solvents. As polarity of solvents increased, proportion of the anti isomer increased as well." @default.
- W4386775184 created "2023-09-16" @default.
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- W4386775184 date "2024-01-01" @default.
- W4386775184 modified "2023-10-06" @default.
- W4386775184 title "Synthesis and spectroscopic characterization of thioparacetamol: evidence for solvent-dependent changes in conformational equilibrium" @default.
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- W4386775184 doi "https://doi.org/10.1016/j.molstruc.2023.136652" @default.
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