Growth and characterization studies on L-threoninium p-toluenesulfonate monohydrate crystal

Prabu, P.; Aarthi, R.; Raja, C. Ramachandra

doi:10.1007/s11082-019-1862-4

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…When the molar ratio of GlcNH 2 /[Ch][Pro] was increased to 1 from 0, the Δδ of C4, C5, C6, and C7 of [Pro] − were −1.9, −1.9, −2.1, and −1.8 ppm, respectively, and the Δδ of the carboxyl carbon (C8) reached −5.8 ppm. The large chemical shift change of the carboxyl carbon can be attributed to the strong intermolecular interaction between the carboxyl group and GlcNH 2 . Meanwhile, the interaction increased the electron density of other carbon atoms in [Pro] − , which led to upfield shifts of these 13 C NMR signals.…”

Section: Resultsmentioning

confidence: 99%

“…The large chemical shift change of the carboxyl carbon can be attributed to the strong intermolecular interaction between the carboxyl group and GlcNH 2 . 43 Meanwhile, the interaction increased the electron density of other carbon atoms in [Pro] − , which led to upfield shifts of these 13 The catalytic interaction between [Ch][Pro] and GlcNH 2 was further revealed by diffusion-ordered spectroscopy (DOSY), which is a NMR spectroscopic technique exhibited as 2D spectra with chemical shifts on the F1 dimension and diffusion coefficients (D) on the F2 dimension. 44 We recorded the DOSY spectra of [Ch][Pro] and GlcNH 2 in the DMSO-d 6 solution, and the results are shown in Figure 4 and Figure S9, respectively.…”

Section: Catalytic Interaction Between [Ch][pro] and Glcnhmentioning

confidence: 99%

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Amino Acid Ionic Liquids Catalyzed d-Glucosamine into Pyrazine Derivatives: Insight from NMR Spectroscopy

Liu

Zhang

Qiao

et al. 2021

J. Agric. Food Chem.

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Using environment-friendly catalysts to convert biomass into compounds with high values is one of the central topics of green chemistry. In this work, [Ch][Pro] (cholinium as the cation and L-proline as the anion) ionic liquid was synthesized and applied as a model catalyst in the production of deoxyfructosazine (DOF) and fructosazine (FZ) from D-glucosamine (GlcNH 2 ). The 13 C NMR chemical shift titration experiments and the diffusion-ordered NMR spectroscopy (DOSY) measurements showed that, when the [Ch][Pro] interacted with GlcNH 2 , the L-proline anion ([Pro] − ) played a major catalytic role instead of cholinium cation ([Ch] + ). The effects of the reaction temperature and the amount of [Ch][Pro] on the product yields were surveyed. The experimental results showed that the highest DOF yield (33.78%) was obtained after 30 min at 100 °C when the molar ratio of [Ch][Pro]/GlcNH 2 was 1. Moreover, in situ 1 H NMR and in situ 13 C NMR experiments were applied to monitor the reaction process with [Ch][Pro] as the catalyst. The reactive intermediate, dihydrofructosazine, was clearly detected by these in situ techniques. Accordingly, a possible reaction pathway was proposed. By applying other amino acids as the anions, we also prepared five other [Ch][AA] ionic liquids, and they showed different catalytic activities and selectivity in the GlcNH 2 self-condensation reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Catalytic Interaction Between [Ch][pro] and Glcnhmentioning

confidence: 99%

Amino Acid Ionic Liquids Catalyzed d-Glucosamine into Pyrazine Derivatives: Insight from NMR Spectroscopy

Liu

Zhang

Qiao

et al. 2021

J. Agric. Food Chem.

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show abstract

“…The existence SO 3 − antisymmetric stretching is expected to peak at 1123 cm −1 in FTIR and 1124 cm −1 in FT-Raman and the corresponding theoretical value has appeared at 1143 cm −1 . [14][15][16] The existence of NH 3 + and SO 3 moieties with peaks in the FT-IR and FT-Raman spectra indicates the occurrence of intermolecular charge transfer interaction in the molecule.…”

Section: Tosylate Anionmentioning

confidence: 99%

Growth, Optical, Thermal, Antibacterial Activity and Computational Study of Highly Efficient Organic NLO Crystal: 2‐Amino‐1‐methyl‐4‐oxo‐4, 5‐dihydro‐1H‐imidazol‐3‐ium 4‐methyl‐benzene‐sulfonate

Shyla,

Jebamalar,

Vinitha

2023

Cryst. Res. Technol.

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A good organic single crystal of 2‐Amino‐1‐methyl‐4‐oxo‐4, 5‐di‐hydro‐1H‐imidazol‐3‐ium 4‐methyl‐benzene‐sulfonate (2ADPTS) is grown by slow evaporation technique, and the orthorhombic system with noncentrosymmetric space group (P212121) is corroborated by single‐crystal X‐ray diffraction analysis. The structural parameters of the 2ADPTS crystal are investigated and weighted up with the theoretical interpretation. The Hydrogen–Hydrogen interaction with (43.6%) in 2ADPTS promotes crystal structure packing stabilization. The presence of various functional groups and chemical composition of the 2ADPTS compound is identified by FTIR and FT‐Raman spectroscopy. The natural bond orbital evaluation interprets all the possible hydrogen bonding interactions and charge delocalizations in the crystal structure. Thermal analysis confirmed the thermal stability of the 2ADPTS crystal. The absorption spectrum of the 2ADPTS crystal is recorded using UV–Vis spectroscopy. The third‐order nonlinear property of the 2ADPTS crystal is confirmed by using the Z‐scan technique. The higher significant antibacterial activity of 2ADPTS is carried out by the standard Kirby‐Bauer test against four pathogenic bacteria commonly called the agar well diffusion process.

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Investigation on optical, laser damage threshold and non linear optical behavior of creatininium p-toluenesulfonate crystal for electro-optical applications

Thayanithi

Kumar

2020

J Mater Sci: Mater Electron

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Growth and characterization studies on L-threoninium p-toluenesulfonate monohydrate crystal

Cited by 8 publications

References 27 publications

Amino Acid Ionic Liquids Catalyzed d-Glucosamine into Pyrazine Derivatives: Insight from NMR Spectroscopy

Amino Acid Ionic Liquids Catalyzed d-Glucosamine into Pyrazine Derivatives: Insight from NMR Spectroscopy

Growth, Optical, Thermal, Antibacterial Activity and Computational Study of Highly Efficient Organic NLO Crystal: 2‐Amino‐1‐methyl‐4‐oxo‐4, 5‐dihydro‐1H‐imidazol‐3‐ium 4‐methyl‐benzene‐sulfonate

Investigation on optical, laser damage threshold and non linear optical behavior of creatininium p-toluenesulfonate crystal for electro-optical applications

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