Results 211 to 220 of about 816,336 (269)

Integrating molecular dynamics simulations to enable rational assembly of immune signals for immunotherapy.

Nanoscale Horiz
Froimchuk E, Jain M, Sahoo A, Edwards C, Shah S, Oakes RS, Matysiak S, Jewell CM.   +7 more
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In-Catalyzed Transfer Hydrogenation and Regioselective Hydrogen–Deuterium Addition to the Olefins

The Journal of Organic Chemistry, 2023
A unique and valuable methodology is developed for the hydrogenation of aromatic as well as aliphatic 1,1-di- and trisubstituted alkenes. In the presence of catalytic InBr3, readily available 1,3-benzodioxole and residual H2O present in the reaction mixture are utilized as a hydrogen gas surrogate and proved to be a practical source of deuterium ...
Gautam Kumar, Debkanta Bhattacharya, Parag Mistry, Indranil Chatterjee   +3 more
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Addition of Hydrogen Sulfide to Juglone

Environmental Science & Technology, 2002
Evidence of the addition of hydrogen sulfide to 5-hydroxy-1,4-naphthoquinone (juglone) in aqueous solution was obtained by nuclear magnetic resonance spectrometry (NMR), electron paramagnetic resonance spectrometry (EPR), UV-visible absorbance spectroscopy, and kinetic measurements.
J A, Perlinger, V M, Kalluri, R, Venkatapathy, W, Angst   +3 more
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On the hydrogen addition to graphene

Journal of Molecular Structure: THEOCHEM, 2009
Herein, we report on a comparative study of the addition of hydrogen to graphene. The binding energies and structural parameters determined using Siesta are in excellent agreement with those calculated employing more sophisticated and computational expensive plane waves codes.
Pablo A. Denis, Federico Iribarne
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Conjugated Additions in Hydrogen Fluoride

Angewandte Chemie International Edition in English, 1969
AbstractFluorine and another substituent can be added in a single step to compounds having CC double bonds in anhydrous hydrogen fluoride. It is possible in this way to obtain e.g. α‐fluorinated β‐halogeno, β‐alkyl, β‐nitro, and β‐amino compounds, and also (in some cases by secondary reactions) fluorinated ethers, alcohols, esters, and carboxylic acids,
L. S. German, I. L. Knunyantz
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An instance of trans-hydrogen addition in catalytic homogeneous hydrogenation

Journal of the Chemical Society D: Chemical Communications, 1969
Reduction of diphenylacetylene with deuterium gas using the py3RhCl3–Me2N·CHO–NaBH4 catalyst system is found to involve deuterium incorporation at the ortho-position of the phenyl group of the product, trans-stilbene, considered to arise by a mechanism of ortho-deuteriation accompanied by 1,3-hydride shift.
Peter Abley, F. J. McQuillin
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Sintering of ceramet iron in hydrogen with additions of hydrogen chloride

Metal Science and Heat Treatment of Metals, 1961
l. The optimum concentration of hydrogen chloride in the process of sintering cermet iron amounts to 5–10%. An intensive blowing with hydrogen at the end of the sintering cycle averts the harmful effect of HCl on the rust-resisting properties of sintered compacts. 2.
R. A. Andriyevskiy, V. V. Panichkin, I. M. Fedorchenko   +2 more
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The addition of hydrogen sulphide to alkenes

Journal of Applied Chemistry, 1954
AbstractAs a result of the interaction of hydrogen sulphide with 2‐methylbut‐2‐ene at temperatures of up to 240° and pressures of up to 115 atm., with tungstosilicic acid as catalyst, thiols, thioalkanes and polymers of 2‐methylbut‐2‐ene were obtained. A calculation of the equilibrium renders it extremely probable that, besides thiols, polymers can be ...
W. C. Zijll Van Langhout, H. I. Waterman
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Addition of phosphorus–hydrogen and arsenic–hydrogen bonds to vinyl isocyanide

J. Chem. Soc., Perkin Trans. 1, 1974
Addition of diphenylphosphine or diphenylarsine to vinyl isocyanide catalysed by potassium t-butoxide gives the liquid 2-diphenylphosphinoethyl (I) or diphenylarsinoethyl isocyanide (II). However, a similar addition of phenylphosphine to vinyl isocyanide in tetrahydrofuran solution gives 4,5-dihydro-3-phenyl-1,3-azaphosphole rather than ...
R. Bruce King, Avi Efraty
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Asymmetric hydrogenation of indene carboxylic acids: stereochemistry of hydrogen addition

Tetrahedron: Asymmetry, 1999
Abstract The stereochemistry of hydrogen addition to α,β-unsaturated carboxylic acids was studied by means of hydrogenation of indene carboxylic acids and their derivatives. Experiments were carried out over Pd/Al2O3 in the presence and absence of cinchonidine as a chiral modifier.
K Borszeky, T Mallat, A Baiker
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