1100 lc msd trap sl version mass spectrometer

General reaction progress was monitored by analytical thin-layer chromatography performed on silica gel HSGF254 precoated plates. Organic solutions were dried over anhydrous Na₂SO₄ and the solvents were removed under reduced pressure. The final compounds were purified with silica gel 100–300 mesh for column chromatography. ¹H NMR was performed using a 400 MHz (Varian) spectrometer or 300 MHz (Vnmrs) spectrometer. Chemical shifts were presented as parts per million (ppm) using tetramethylsilane as an internal standard. Mass spectra were obtained using an Agilent 1100 LC/MSD Trap SL version Mass Spectrometer.

General reaction progress was monitored by analytical thin-layer chromatography performed on silica gel HSGF254 precoated plates. Organic solutions were dried over anhydrous Na₂SO₄ and the solvents were removed under reduced pressure. The final compounds were purified with silica gel 100–300 mesh for column chromatography. ¹H NMR was performed using a 400 MHz (Varian) spectrometer or 300 MHz (Vnmrs) spectrometer. Chemical shifts were presented as parts per million (ppm) using tetramethylsilane as an internal standard. Mass spectra were obtained using an Agilent 1100 LC/MSD Trap SL version Mass Spectrometer.