All reagents and solvents were obtained from commercial suppliers and used without further purification. Chitosan (MW = 100000–300000 Da) was purchased from Acros Organics. 1H NMR spectra were recorded at 500 MHz using a Bruker DRX-500 Avance spectrometers in DMSO-d6 or CDCl3 as the solvent. Characterization of the catalyst 1 was carried out using FESEM TESCAN-MIRA3, EDX Numerix DXP-X10P, VSM (BHV-55, Riken, Japan), Shimadzu FT-IR-8400S and TEM Philips CM30. The analytical thin layer chromatography (TLC) experiments were performed using Merck 0.2 mm silica gel 60 F-254 Al-plates.
0.2 mm silica gel 60 f 254 al plates
Manufactured by Merck Group
The 0.2 mm silica gel 60 F-254 Al-plates are thin-layer chromatography (TLC) plates. They consist of a thin layer of silica gel, which is a common adsorbent material, coated on an aluminum backing. The silica gel layer is 0.2 millimeters thick. The plates also contain a fluorescent indicator F-254, which allows for UV-based visualization of separated compounds.
Automatically generated - may contain errors
Lab products found in correlation
Avance drx 500 spectrometer, by Bruker (4 mentions)
Chitosan, by Thermo Fisher Scientific (3 mentions)
Ftir 8400s spectrometer, by Shimadzu (2 mentions)
Ftir 8400s, by Bruker (1 mentions)
Avance drx 400, by Bruker (1 mentions)
Avance drx 500, by Bruker (1 mentions)
Triethylamine tea, by Merck Group (1 mentions)
6 protocols using 0.2 mm silica gel 60 f 254 al plates
1
Characterization of Chitosan-Derived Catalyst
2
Chitosan-based Organic Synthesis Protocols
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All chemicals and reagents were purchased from Merck and Aldrich and used without further purification, except for benzaldehyde, which was used as a freshly distilled sample. Chitosan (MW = 100,000–300,000 Da) was purchased from Acros Organics. Melting points were determined using a digital Electrothermal 9100 capillary apparatus and are uncorrected. Fourier-transform infrared spectroscopy (FTIR) spectra were recorded, as KBr pellets, on a Shimadzu FT-IR-8400S spectrometer. 1H NMR spectra (500 MHz) were obtained using a Bruker DRX-500 Avance spectrometer. All 1H NMR spectra were run in CDCl3 solution, relative to TMS (0.00 ppm), at ambient temperature. Analytical thin layer chromatography (TLC) was performed using Merck 0.2 mm silica gel 60 F-254 Al-plates for monitoring of reactions. All products were characterized by spectroscopic methods (FTIR and 1H NMR spectra) and melting points.
3
Synthesis and Characterization of Nanocatalyst 1
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All chemicals were purchased
from Merck or Aldrich with the highest purity available, and benzaldehyde
was used as a freshly distilled sample. The morphological, structural,
and compositional characterizations of the nanocatalyst1 were properly carried out using FESEM TESCAN-MIRA3, EDX Numerix
DXP-X10P, Philips CM30, Shimadzu FTIR-8400S, TGA Bahr company STA
504, and CHN Elemental instruments. Characterization of introduced
nanocatalyst1 was performed by transmission electron
microscopy (TEM, Philips CM30). A Shimadzu FTIR-8400S spectrometer
and a Bruker DRX-500 Avance spectrometer (ambient temperature in DMSO-d6) were used for recording FTIR, 1H NMR (500 MHz), and 13C NMR (125 MHz) spectra of products.
The analytical thin-layer chromatography (TLC) experiments were performed
using Merck 0.2 mm silica gel 60 F-254 Al-plates for observation progress
of reactions. All melting points were determined using a digital Electrothermal
9100 capillary melting point apparatus. The isolated yields of products
have been reported. All of the products, except6J , are
known compounds, and their physical, analytical, and spectroscopic
data were in agreement with the authentic samples.
from Merck or Aldrich with the highest purity available, and benzaldehyde
was used as a freshly distilled sample. The morphological, structural,
and compositional characterizations of the nanocatalyst
DXP-X10P, Philips CM30, Shimadzu FTIR-8400S, TGA Bahr company STA
504, and CHN Elemental instruments. Characterization of introduced
nanocatalyst
microscopy (TEM, Philips CM30). A Shimadzu FTIR-8400S spectrometer
and a Bruker DRX-500 Avance spectrometer (ambient temperature in DMSO-d6) were used for recording FTIR, 1H NMR (500 MHz), and 13C NMR (125 MHz) spectra of products.
The analytical thin-layer chromatography (TLC) experiments were performed
using Merck 0.2 mm silica gel 60 F-254 Al-plates for observation progress
of reactions. All melting points were determined using a digital Electrothermal
9100 capillary melting point apparatus. The isolated yields of products
have been reported. All of the products, except
known compounds, and their physical, analytical, and spectroscopic
data were in agreement with the authentic samples.
4
Characterization of Organic Compounds
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General Remarks. All solvents and starting materials were purchased from Merck and Sigma-Aldrich used without any additional purification. Analytical TLC was carried out using Merck 0.2 mm silica gel 60 F-254 Al-plates. 1H NMR and 13C NMR spectra were recorded on a Bruker Avance DRX-400 machine using DMSO-d6 as solvent and TMS as an internal standard at room temperature (DMSO-d6 1HNMR: δ (ppm) = 2.50 ppm;13C-NMR: δ (ppm) = 39.9 ppm). Chemical shifts were reported in ppm scale. FT-IR spectra of samples were obtained on ABB Bomem MB100 spectrometer with potassium bromide (KBr) pellets. Melting points were determined using an Electrothermal 9100 apparatus and are uncorrected.
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5
Hybrid Nanocatalyst Characterization
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All chemicals were purchased from Merck or Aldrich chemical companies. Melting points were measured using an Electrothermal 9100 device and are unmodified. Characterization of the new hybrid nanocatalyst 1 was performed by FESEM TESCAN-MIRA3, EDX Numerix DXP-X10P, Shimadzu FTIR-8400S and TGA Bahr Company STA 504. The XRD pattern of the catalyst was obtained using a TW 1800 diffractometer with Cu Ka radiation (λ = 1.54050 Å). The analytical thin layer chromatography (TLC) experiments was performed using Merck 0.2 mm silica gel 60F-254Al-plates. All compounds are known and well characterized by FTIR and 1H NMR (500 MHz, Bruker DRX-500 Avance, in DMSO-d6 at ambient temperature) spectroscopy.
6
Synthesis and Characterization of CS-TDI-Me-TDI-HNSO3H Nanomaterial
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The CS-TDI-Me-TDI-HNSO3H nanomaterial (1) was purely prepared by modifing of known methods for similar materials having the same functional groups. Chitosan (CS, MW = 100 000–300 000 Da) was obtained from Acros Organics. Melamine (Me) and triethylamine (TEA) were provided by Sigma-Aldrich. Tetrahydrofuran (THF), sulfamic acid (H2NSO3H), and toluene-2,4-diisocyanate (TDI) were purchased from Merck-Millipore. Other chemical compounds were supplied by Merck and Aldrich Chemical Co. Characterization of the heterogeneous CS-TDI-Me-TDI-H2NSO3H (1) organocatalyst was performed using FESEM (TESCAN-MIRA III), EDS (TESCAN-MIRA II), TGA (STA 504, Bahr Co.), and XRD (Bourevestnik DRON-8) analyses. 1H NMR (500 MHz) spectra recorded on a Bruker DRX-500 Avance spectrometers in DMSO, as the solvent, at ambient temperature. FT-IR spectra were recorded as KBr pellets on a Shimadzu FT-IR-8400S spectrometer. Analytical thin-layer chromatography (TLC) was performed using Merck 0.2 mm silica gel 60F-254 Al-plates for reaction monitoring. Melting points were determined using an Electrothermal 9100 apparatus.
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