X-4 binocular microscope melting point apparatus was used to determine the melting point of the compound. The target compound was measured by dissolving in CDCl3 or DMSOd6, and tetramethylsilane was selected as an internal standard. 1H and 13C spectrum data were measured by a Bruker AV-300 nuclear magnetic resonance spectrometer. Abbreviations of spectral data are as follows: s, singlet; d, doublet; t, triplet; q, quartet; m, multiplet). Infrared (IR) is measured by an FT-IR1730 infrared spectrophotometer using the KBr tablet method. High-resolution mass spectra (HRMS) was determined by the mass spectrometer produced by Bruker Daltonik in the Germany. The solvent and reagent used were of analytical or chemical grade (Aladdin, China Reagent Network, Shenyang Chemical Reagent Factory, Sigma-Aldrich). The silica gel used for thin-layer plates and column chromatography was produced by Qingdao Ocean Chemical Factory.
Av 300 nuclear magnetic resonance spectrometer
Manufactured by Bruker
Sourced in Germany
The AV-300 nuclear magnetic resonance (NMR) spectrometer is a laboratory instrument manufactured by Bruker. It is designed to perform NMR spectroscopy, a technique used to analyze the structure and composition of chemical compounds. The AV-300 operates at a frequency of 300 MHz and is capable of detecting and measuring the magnetic properties of atomic nuclei within a sample.
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Lab products found in correlation
2 protocols using av 300 nuclear magnetic resonance spectrometer
1
Characterization of Organic Compounds
2
Synthesis and Characterization of β-pinene
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β-pinene (1 ) was obtained from Jiangxi Jishui Hongda Natural Spices Ltd. (Jishui, China) of a commercial source. All the other chemicals used in the synthesis were of reagent grade and the purity was chemically pure (≥99.5%). A Nicolet IS 10 spectrophotometer (Thermo Nicolet Co., Ltd., Madison, WI, USA) was used for the Fourier transform infrared (FT-IR) spectra. A Bruker AV-300 nuclear magnetic resonance spectrometer (Bruker Co., Ltd., Karlsruhe, Germany) was used to measure the 1H-NMR spectra. An Agilent-5973 spectrophotometer was (Agilent Technologies Inc., Santa Clara, CA, USA) utilized for the MS spectra. A Bruker Q-TOF mass spectrometer (Bruker Bruker Co., Ltd., Karlsruhe, Germany) equipped with an electro spray ionization source was applied for ESI mass spectral data. Thin-layer chromatography (TLC) was employed to monitor the progress of reactions and determine the reaction’s end, which was carried out on Merck silica gel 60 GF254 plates (Qingdao Bangkai Hi-Tech Materials Co., Ltd., Qingdao, China) with eluent of petroleum ether/ethylacetate (v/v = 8:1). The preparation and the structures of title compounds are shown in Scheme 1 and Scheme 2 .
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