Dpx 400 instrument

Manufactured by Bruker

The DPX-400 is a nuclear magnetic resonance (NMR) spectrometer instrument manufactured by Bruker. It is designed to perform high-resolution NMR analysis of chemical samples. The core function of the DPX-400 is to generate and detect radio frequency (RF) signals to measure the magnetic properties of atomic nuclei within a sample, providing detailed structural information about the sample's chemical composition.

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Lab products found in correlation

Selekt flash chromatography, by Biotage (2 mentions) Dpx 500 instrument, by Bruker (2 mentions) Tlc silica gel 60 f254 glass plates, by Merck Group (2 mentions) Ru3 co 12, by Strem Chemicals (1 mentions) Ftir prestige 21 spectrophotometer, by Bruker (1 mentions) Hf254 type 60, by Merck Group (1 mentions)

4 protocols using dpx 400 instrument

Synthesis and Purification of Novel Substrates

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All chemicals were purchased from
commercial sources or provided by Pfizer and used without further
purification. Substrates 2b–d were
synthesized according to the reported procedure. Unless stated otherwise,
all column purification were performed on a Biotage Selekt Flash Chromatography,
eluted with ethyl acetate: hexane, 0–15% gradient, detected
by UV absorption at 254 nm. Thin layer chromatography (TLC) was carried
out using Merck Millipore TLC silica gel 60 F254 glass plates. ¹H, ¹³C, and ¹⁹F NMR spectra were measured
on a Bruker DPX-400 instrument (operating at 400 MHz for ¹H, 100 MHz for ¹³C, and 375 MHz for ¹⁹F) or
a Bruker DPX-500 instrument (operating at 500 MHz for ¹H and 125 MHz for ¹³C).

Ren X., Couture B.M., Liu N., Lall M.S., Kohrt J.T, & Fasan R. (2022). Enantioselective Single and Dual α-C–H Bond Functionalization of Cyclic Amines via Enzymatic Carbene Transfer. Journal of the American Chemical Society, 145(1), 537-550.

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Ruthenium-Catalyzed Alkene Hydrofunctionalization

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All reactions were carried out under a nitrogen atmosphere using standard Schlenk techniques unless otherwise stated. Reagent-grade solvents were dried using appropriate drying agents and distilled by standard methods prior to use. Ru₃(CO)₁₂ was purchased from Strem Chemicals Inc. and used without further purification. 2-Vinylpyrazine and dppm were purchased from Acros Organics and used as received. Ru₃(CO)₁₀(μ-dppm) was prepared according to a literature method.²⁷ Products were separated without any special precautions on TLC plates coated with 0.25 mm silica gel (HF₂₅₄-type 60, E. Merck, Germany). IR spectra were recorded on a Shimadzu FTIR Prestige 21 spectrophotometer and NMR spectra on a Bruker DPX 400 instrument. All chemical shifts are reported in δ units and are referenced to the residual protons of the deuterated solvents (¹H) or to external H₃PO₄ (³¹P), whose chemical shift is assigned to δ = 0.0. Elemental analyses were performed by the Microanalytical laboratory of Wazed Miah Science Research Centre at Jahangirnagar University.

Hossain M.M., Akter N., Ghosh S., Nesterov V.N., Richmond M.G., Hogarth G, & Kabir S.E. (2019). New molecular architectures containing low-valent cluster centres with di- and trimetalated 2-vinylpyrazine ligands: synthesis and molecular structures of Ru5(CO)15(μ5-C4H2N2CH CH)(μ-H)2 and Ru8(CO)24(μ7-C4H2N2CHC)(μ-H)3. RSC Advances, 9(36), 21025-21030.

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Schlenk Synthesis of Metal Phosphines

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Unless otherwise
noted, all reactions were carried out under a nitrogen atmosphere
using standard Schlenk techniques. Reagent-grade solvents were dried
using appropriate drying agents and distilled prior to use by standard
methods. Infrared spectra were recorded on a Shimadzu FTIR 8101 spectrophotometer.
NMR spectra were recorded on a Bruker DPX 400 instrument. Mass spectra
were recorded on a Varian Mat 312 mass spectrometer. Elemental analyses
were performed by Microanalytical Laboratories, University College
London. Collman’s reagent and phosphines were purchased from
Strem Chemical Inc. and used without further purification.

Rahaman A., Ghosh S., Unwin D.G., Basak-Modi S., Holt K.B., Kabir S.E., Nordlander E., Richmond M.G, & Hogarth G. (2014). Bioinspired Hydrogenase Models: The Mixed-Valence Triiron Complex [Fe3(CO)7(μ-edt)2] and Phosphine Derivatives [Fe3(CO)7–x(PPh3)x(μ-edt)2] (x = 1, 2) and [Fe3(CO)5(κ2-diphosphine)(μ-edt)2] as Proton Reduction Catalysts. Organometallics, 33(6), 1356-1366.

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Synthesis and Characterization of Fluorinated Substrates

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All chemicals were purchased from commercial sources or provided by Pfizer and used without further purification. Substrates 2b-2d were synthesized according to the reported procedure. Unless stated otherwise, all column purification were performed on a Biotage Selekt Flash Chromatography, eluted with ethyl acetate: hexane, 0-15% gradient, detected by UV absorption at 254nm. Thin Layer Chromatography (TLC) was carried out using Merck Millipore TLC silica gel 60 F254 glass plates. 1H, 13C, and 19F NMR spectra were measured on a Bruker DPX-400 instrument (operating at 400 MHz for 1H, 100 MHz for 13C, and 375 MHz for 19F) or a Bruker DPX-500 instrument (operating at 500 MHz for 1H and 125 MHz for ¹³C).

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