1H-nuclear magnetic resonance (NMR) spectra were measured with a Bruker avance 400 MHz NMR spectrometer. 1H chemical shifts (δ) were measured in ppm, relative to TMS and 13C-NMR chemical shifts to dimethyl sulfoxide-d6 and converted to the TMS scale by adding 39.5. Electrospray ionization-mass spectrometry (ESI-MS) were measured on an AB SCIEX API 3200QTRAP liquid chromatography (LC)/MS/MS System, ultraviolet (UV) recordings were made on a Shimadzu UV-Visible-1601 spectrophotometer. Paper chromatographic (PC) analysis and preparative PC separation were carried out on Whatman No. 1 and 3 MM papers, using solvent systems 15% HOAc and BAW (n-BuOH-HOAc-H2O, 4:1:5, upper layer). Medium pressure LC (MPLC) was performed on Sepaore ×50 (Buchi Labortechnik, swissland).
No 1 and 3 mm papers
Manufactured by Cytiva
No. 1 and 3 MM papers are types of filter papers commonly used in laboratories for various filtration and separation processes. These papers are made from high-quality materials and designed to offer consistent performance and reliable results. They are suitable for a range of applications, including sample preparation, vacuum filtration, and general laboratory tasks. The core function of these filter papers is to efficiently separate solid particles from liquids or gases, enabling the purification and isolation of specific components in a sample.
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2 protocols using no 1 and 3 mm papers
1
NMR, MS, and Chromatographic Characterization
2
Spectroscopic Characterization of Organic Compounds
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UV spectra were recorded on Shimadzu model UV-240 and 2401 PC spectrophotometer (Shimadzu Inc., Tokyo, Japan). NMR experiments were recorded on Bruker spectrometer (Switzerland) 600 (1H NMR spectra: 600 MHz; 13C NMR spectra: 150 MHz). The chemical shifts are given in δ (ppm) relative to tetramethylsilane (Me4Si) TMS. Column chromatography (CC) was carried out on silica gel, 60–200 mesh, Fluca, India) and Sephadex LH-20 (Pharmazia, Uppsala, Sweden). Paper chromatography (PC, descending) Whatman No. 1 and 3 mm papers, silica gel aluminum sheets (20 × 20) using solvent systems hexane: chloroform: methanol 90:8:2 (S-1), 15% HOAc(S-2), BAW (n-BuOH: HOAc: H2O) 3:1:1(S-3), and BAW 4:1:5, the upper layer (S-4).
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