All chemicals and solvents were used as received without further purification. Neutral aluminum oxide was purchased from Sinopharm Chemical Reagent Co., Ltd. 1H and 13C NMR data were recorded with Bruker Advance III (400 MHz) or (600 MHz) spectrometers. All chemical shifts (δ) are reported in ppm and coupling constants (J) are reported in Hz. High resolution mass spectra (HRMS) of the substrates, intermediate and products were obtained using a Bruker Daltonics micro TOF-Q spectrometer. Melting points were measured by a melting point apparatus equipped with a thermometer and used uncorrected. All reactions were monitored by thin-layer chromatography (TLC) through GF254 silica gel-coated plates. The operando IR experiments were recorded on a Mettler Toledo React IR 15 spectrometer using a diamond comb.
Neutral aluminum oxide
Manufactured by Sinopharm
Sourced in China
Neutral aluminum oxide is a fine, white, granular or powdered material commonly used in various laboratory applications. Its primary function is as an adsorbent, filtration aid, and desiccant. The material is chemically stable, inert, and possesses a high surface area, making it suitable for a range of laboratory procedures and analyses.
Automatically generated - may contain errors
2 protocols using neutral aluminum oxide
1
Characterization of Organic Compounds
2
Extraction and Analysis of Organic Compounds
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Standard solutions of the target compounds were purchased from Dr. Ehrenstorfer GmbH (Augsburg, Germany). The internal standard solutions (Naphthalene-d8, Phenanthrene-d10
and Chrysene-d12) and surrogate recovery standard solutions (2-Fluorobiphenyl, Pyrene-d10) for GC-MS analysis were purchased from o2si smart solutions (Charleston, SC, USA). Silica gel and neutral aluminum oxide (for column chromatography, 100 -200 mesh) were obtained from Sinopharm Chemical Reagent Co., Ltd., China. All organic solvents used (hexane, acetone and dichloro-methane; ACS/HPLC certified) were obtained from J&K Scientific, USA. Silica gel and neutral aluminum oxide, as well as all glassware, were heated at 450℃ for 6 h prior to use to remove the possible organic residues. The Silica gel and neutral aluminum oxide were further activated at 130℃ for 13 h, reactivated with Milli-Q water (3%, w/w) for 2 h and were then soaked in hexane for 12 h before packing in the chromatographic column.
and Chrysene-d12) and surrogate recovery standard solutions (2-Fluorobiphenyl, Pyrene-d10) for GC-MS analysis were purchased from o2si smart solutions (Charleston, SC, USA). Silica gel and neutral aluminum oxide (for column chromatography, 100 -200 mesh) were obtained from Sinopharm Chemical Reagent Co., Ltd., China. All organic solvents used (hexane, acetone and dichloro-methane; ACS/HPLC certified) were obtained from J&K Scientific, USA. Silica gel and neutral aluminum oxide, as well as all glassware, were heated at 450℃ for 6 h prior to use to remove the possible organic residues. The Silica gel and neutral aluminum oxide were further activated at 130℃ for 13 h, reactivated with Milli-Q water (3%, w/w) for 2 h and were then soaked in hexane for 12 h before packing in the chromatographic column.
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