Merck
Search Within
Zastosowane filtry
Słowo kluczowe:'360554'
Wyświetlanie 1-30 of 40 wyniki(-ów) for "

360554

" w ciągu Dokumenty
Wenguo Yang et al.
Chemistry, an Asian journal, 7(4), 771-777 (2012-02-10)
Through the cleavage of the C-C bond, the first catalytic tandem conjugate addition-elimination reaction of Morita-Baylis-Hillman C adducts has been presented. Various S(N)2'-like C-, S-, and P-allylic compounds could be obtained with exclusive E configuration in good to excellent yields.
The catalytic chemistry of nitromethane over Co-ZSM5 and other catalysts in connection with the methane-NOxSCR reaction.
Cowan AD, et al.
J. Catal., 176(2), 329-343 (1998)
Nagappanpillai Adarsh et al.
Analytical chemistry, 86(18), 9335-9342 (2014-08-26)
With an objective to develop optical probes for biologically important anions and neutral molecules, we synthesized three novel NIR absorbing aza-BODIPY derivatives, 3a-3c, and have systematically tuned their photophysical properties by changing the peripheral substitution. A profound red-shift was observed
Emad L Izake et al.
Talanta, 94, 342-347 (2012-05-23)
Deep Raman spectroscopy has been utilized for the standoff detection of concealed chemical threat agents from a distance of 15 m under real life background illumination conditions. By using combined time and space resolved measurements, various explosive precursors hidden in
Baozhu Wang et al.
Molecules (Basel, Switzerland), 17(9), 10014-10025 (2012-08-28)
The structure-based design and synthesis of a series of novel neonicotinoid analogues are described. The novel neonicotinoid analogues were designed based upon the reaction of enamine derivatives with electron-withdrawing β-substituents with electrophilic thiocyanogen reagents. These compounds were characterized by spectroscopic
Can a spuriously raised creatinine by Jaffe method be helpful in poisoning?
Benjamin D Lakin et al.
Pediatrics international : official journal of the Japan Pediatric Society, 53(4), e20-e21 (2011-08-20)
Eagleson M.
Concise Encyclopedia Chemistry, 696-696 (1994)
Atanu Bhattacharya et al.
The Journal of chemical physics, 136(2), 024321-024321 (2012-01-21)
Decomposition of electronically excited nitro-containing molecules with different X-NO(2) (X = C, N, O) moieties has been intensively investigated over the past decades; however, their decomposition behavior has not previously been compared and contrasted. Comparison of their unimolecular decomposition behavior
Benedek Vakulya et al.
Organic letters, 7(10), 1967-1969 (2005-05-07)
Cinchona alkaloid-derived chiral bifunctional thiourea organocatalysts were synthesized and applied in the Michael addition between nitromethane and chalcones with high ee and chemical yields.
Qian Luo et al.
Journal of chromatography. A, 1365, 45-53 (2014-09-27)
When iodide and natural organic matter are present in raw water, the formation of iodo-trihalomethanes (Iodo-THMs), haloacetonitriles (HANs), and halonitromethanes (HNMs) pose a potential health risk because they have been reported to be more toxic than their brominated or chlorinated
Ryan R Walvoord et al.
The Journal of organic chemistry, 78(17), 8859-8864 (2013-07-31)
A method for the formation of arylnitromethanes is described that employs readily available aryl halides or triflates and small amounts of nitromethane in a dioxane solvent, thereby reducing the hazards associated with this reagent. Specifically, 2-10 equiv (1-5% v/v) of
Gaosheng Yang et al.
Chemical communications (Cambridge, England), 48(47), 5880-5882 (2012-05-11)
A three-component cascade reaction of salicylaldehyde, malononitrile/cyanoacetate and nitromethane catalysed by chiral tertiary amino-thioureas was developed, which leads to the production of highly functionalized 2-amino-4H-chromenes in good yields with good to excellent enantioselectivities.
Lan He et al.
The Journal of chemical physics, 136(3), 034501-034501 (2012-01-28)
Molecular dynamics simulations of supported shock waves (shock pressure P(s) ∼ 15 GPa) propagating along the [110], [011], [101], and [111] directions in crystalline nitromethane initially at T = 200 K were performed using the nonreactive Sorescu-Rice-Thompson force field [D.
Nitromethane.
Report on carcinogens : carcinogen profiles, 12, 299-300 (2011-08-24)
Eleonora D Ilieva et al.
Molecules (Basel, Switzerland), 17(5), 4936-4949 (2012-05-02)
A newly found reaction for the synthesis of 3,4-disubstituted 1-hydroxy-pyrrolidine-2,5-diones from 3-substituted coumarins and nitromethane has been elaborated. The reaction involved a simple and convenient experimental procedure. The applicability of the rearrangement reaction is determined.
Stephanie Oerum et al.
Dalton transactions (Cambridge, England : 2003), 42(1), 292-298 (2012-11-22)
Highly stereoselective and rapid (<1 min) addition reactions to the imine double bond of 2-(methylimino)acetate complexes [L(4)Co(O(2)CCH=NCH(3))](2+) [L(4) = (en)(2) (7), (tren) (11)] were achieved in aqueous solution with nitromethane, ethyl 3-oxobutanoate or diethyl malonate. The molecular structures of two
Hima K Potturi et al.
The Journal of organic chemistry, 77(1), 626-631 (2011-12-14)
Aliphatic or aromatic N,N-disubstituted nitrosamine was generated in fair to excellent yield from the reaction of a secondary or tertiary amine with o-iodoxybenzoic acid (IBX) or o-iodosylbenzoic acid (IBA)/R(4)NX (X = halide) and nitromethane. The product yield was strongly influenced
Ludmila Müllerová et al.
Electrophoresis, 34(5), 768-776 (2012-11-30)
A neutral marker of the EOF can gain a nonzero effective mobility because of its possible interaction with a charged complexing agent, such as a chiral selector in CE. We determined effective mobilities of four compounds often used as EOF
Metal ion encapsulation: cobalt cages derived from polyamines, formaldehyde, and nitromethane.
Geue RJ, et al.
Journal of the American Chemical Society, 106(19), 5478-5488 (1984)
D Cao et al.
Clinical toxicology (Philadelphia, Pa.), 52(6), 611-617 (2014-05-23)
Nitromethane interferes with Jaffé measurements of creatinine, potentially mimicking acute kidney injury. We determined the proportional contribution of nitromethane in blood samples to creatinine measured by the Jaffé colorimetric and the point-of-care (POC) reactions and determined whether the difference can
Huachang Hong et al.
The Science of the total environment, 444, 196-204 (2012-12-29)
The formations of THMs, HAAs, and HNMs from chlorination and chloramination of water from Jinlan Reservoir were investigated in this study. Results showed that monochloramine rather than chlorine generally resulted in lower concentration of DBPs, and the DBPs formation varied
Naomi Rom et al.
The journal of physical chemistry. A, 115(36), 10181-10202 (2011-08-05)
The decomposition mechanism of hot liquid nitromethane at various compressions was studied using reactive force field (ReaxFF) molecular dynamics simulations. A competition between two different initial thermal decomposition schemes is observed, depending on compression. At low densities, unimolecular C-N bond
Jolanta Robak et al.
Carbohydrate research, 404, 83-86 (2015-02-11)
A simple synthesis of series of new catalysts derived from chiral bifunctional ureas is described. The aza-Henry reaction of imines with nitromethane was promoted by sugar derived bifunctional organocatalysts to give optically active β-nitroamines. The aza-Henry reaction products were obtained
Junhong Shan et al.
Chemosphere, 86(4), 323-328 (2011-11-01)
In this study, the effects of pH, bromide and nitrite on the formation of halonitromethanes (HNMs) and trihalomethanes (THMs) from eight amino acids (glycine, alanine, serine, cysteine, aspartic acid, glutamic acid, lysine and histidine) and four amino sugars (glucosamine, galactosamine
J Szekely et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 959, 1-4 (2014-04-22)
Since 2008 a significant amount of work has focused on the development of methods to analyze contaminated heparin. This work focuses on utilizing heparin's ability to serve as a chiral selector as a means for determining contamination. Specifically, the effect
Sharon Curtis et al.
The journal of physical chemistry. A, 115(48), 14006-14012 (2011-10-28)
Bare metal anions K(-), Rb(-), Cs(-), Fe(-), Co(-), Ni(-), Cu(-), and Ag(-), generated by electrospray ionization of the corresponding oxalate or tricarballylate solutions, were allowed to react with methyl and ethyl chloride, methyl bromide, nitromethane, and acetonitrile in the collision
Ludmila Müllerová et al.
Journal of chromatography. A, 1384, 147-154 (2015-02-11)
Interactions among analyte forms that undergo simultaneous dissociation/protonation and complexation with multiple selectors take the shape of a highly interconnected multi-equilibrium scheme. This makes it difficult to express the effective mobility of the analyte in these systems, which are often
Piyarat Weerachanchai et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 15(16), 3580-3591 (2014-08-26)
The total and partial solubility parameters (dispersion, polar and hydrogen-bonding solubility parameters) of ten ionic liquids were determined. Intrinsic viscosity approaches were used that encompassed a one-dimensional method (1D-Method), and two different three-dimensional methods (3D-Method1 and 3D-Method2). The effect of
Nitromethane.
IARC monographs on the evaluation of carcinogenic risks to humans, 77, 487-501 (2000-12-02)
Spectral assignment and proton transfer studies of N-(R-salicylidene)-1-amino-1-deoxy-D-sorbitols.
A Szady-Chełmieniecka et al.
Magnetic resonance in chemistry : MRC, 53(10), 849-852 (2015-06-23)
Strona 1 z 2
Strona 1 z 2