Solvents and reagents used for synthesis and purification were purchased from Alfa Aesar (Karlsruhe, Germany). All chemicals were of analytical grade. The purity of the synthesized compounds was verified by thin layer chromatography and was carried out on precoated Silica Gel 60F254 sheets using heptan – ethyl-acetate 3:7 as developer and UV absorption for visualization. The melting points were established using an Electrothermal melting point meter and are uncorrected. LC-MS analyses were performed with an Agilent 1100 series and an Agilent Ion Trap SL mass spectrometer. 1H-NMR was performed on a Bruker Avance NMR spectrometer operating at 500 MHz, in DMSO-d6 as solvent. Chemical shift values were reported relative to tetramethylsilane (TMS) as internal standard. The synthesis of the compounds 1, 2 and 3 was previously reported [14 ]. The chemical structures of compounds 6a–f, 7a–d are presented in Table I , II . Ten compounds with new structures were synthesized (Figure 1 ) and characterized.
Ion trap sl mass spectrometer
Manufactured by Agilent Technologies
Sourced in United States
The Ion Trap SL mass spectrometer is a laboratory instrument designed for the analysis and identification of chemical compounds. It utilizes ion trap technology to capture, store, and selectively eject ions for mass analysis, enabling the detection and measurement of various analytes.
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2 protocols using ion trap sl mass spectrometer
1
Synthesis and Characterization of Novel Compounds
2
Analytical Characterization of Organic Compounds
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Reagents and solvents used in this study were of analytical grade purity and purchased from Sigma-Aldrich Chemicals (Buchs, Switzerland) and Alfa Aesar (Karlsruhe, Germany). The progress of all reactions was checked by thin layer chromatography (TLC) using precoated Silica Gel 60F254 sheets (Merck, Darmstadt, Germany). The spots on plates were visualized under UV light (254 nm). Melting points (m.p.) were determined using an MPM-H1 melting point apparatus (Schorpp Gerätetechnik, Überlingen, Germany) and are uncorrected. Elemental analyses for C, H, N and S were carried out on a Vario El CHNS instrument (Hanau, Germany). FT-IR spectra were recorded on a JASCO FT-IR-6100 spectrophotometer (Cremella, Italy). 1H-NMR and 13C-NMR analyses were performed on an Avance NMR spectrometer (Bruker, Karlsruhe, Germany), operating at 500 MHz and 125 MHz respectively, in DMSO-d6, using tetramethylsilane (TMS) as internal standard. Chemical shifts (δ values) are expressed in parts per million (ppm). M + 1 peaks were determined on an Agilent 1100 series and an Agilent Ion Trap SL mass spectrometer (Santa Clara, CA, USA), operating at 70 eV.
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