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Showing 1 to 12 of 105 entries
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Communication: the influence of CO2 poisoning on overvoltages and discharge capacity in non-aqueous Li-Air batteries.

The Journal of chemical physics

Mekonnen YS, Knudsen KB, Mýrdal JS, Younesi R, Højberg J, Hjelm J, Norby P, Vegge T.
PMID: 24697413
J Chem Phys. 2014 Mar 28;140(12):121101. doi: 10.1063/1.4869212.

The effects of Li2CO3 like species originating from reactions between CO2 and Li2O2 at the cathode of non-aqueous Li-air batteries were studied by density functional theory (DFT) and galvanostatic charge-discharge measurements. Adsorption energies of CO2 at various nucleation sites...

Topic: Inguinal Hernia - Crossfire between the meshes.

Hernia : the journal of hernias and abdominal wall surgery

Ruiz-Jasbon F, Ticehurst K, Norrby J, Ahonen J, Ivarsson ML, Klimovska T, Mukans M, Niciporuka R, Ivanovs I, Pupelis G, El-Bakary T, Bouchiba N, El-Faki A, El-Akkad M, Dabic D, Maric B, Perunicic V, Chung M, Amerio G, Pozzo G, Sorisio V, Peng L, Huang K, Huang YJ, Yang YC, Hu SX, Zhao G.
PMID: 26518817
Hernia. 2015 Apr;19:S251-3. doi: 10.1007/BF03355365.

No abstract available.

Anomeric Effects in Sulfamides.

The journal of physical chemistry. A

Hansen E, Limé E, Norrby PO, Wiest O.
PMID: 27135551
J Phys Chem A. 2016 May 26;120(20):3677-82. doi: 10.1021/acs.jpca.6b02757. Epub 2016 May 10.

Sulfamides, together with their simpler sulfonamide analogs, are common functional groups in a significant number of biologically active compounds. This is partly due to their unique electronic structure and conformational behavior, which mimics the tetrahedral intermediate involved in many...

Single-Flask Multicomponent Palladium-Catalyzed α,γ-Coupling of Ketone Enolates: Facile Preparation of Complex Carbon Scaffolds.

Angewandte Chemie (International ed. in English)

Grigalunas M, Norrby PO, Wiest O, Helquist P.
PMID: 26276904
Angew Chem Int Ed Engl. 2015 Sep 28;54(40):11822-5. doi: 10.1002/anie.201505895. Epub 2015 Aug 14.

A three-component palladium-catalyzed reaction sequence has been developed in which γ-substituted α,β-unsaturated products are obtained in a single flask by an α-alkenylation with either a subsequent γ-alkenylation or γ-arylation of a ketone enolate. Coupling of a variety of electronically...

Development of a Q2MM Force Field for the Asymmetric Rhodium Catalyzed Hydrogenation of Enamides.

Journal of chemical theory and computation

Donoghue PJ, Helquist P, Norrby PO, Wiest O.
PMID: 26631706
J Chem Theory Comput. 2008 Aug;4(8):1313-23. doi: 10.1021/ct800132a.

The rhodium catalyzed asymmetric hydrogenation of enamides to generate amino acid products and derivatives is a widely used method to generate unnatural amino acids. The choice of a chiral ligand is of utmost importance in this reaction and is...

Enantioconvergent synthesis by sequential asymmetric Horner-Wadsworth-Emmons and palladium-catalyzed allylic substitution reactions.

Journal of the American Chemical Society

Pedersen TM, Hansen EL, Kane J, Rein T, Helquist P, Norrby PO, Tanner D.
PMID: 11583534
J Am Chem Soc. 2001 Oct 10;123(40):9738-42. doi: 10.1021/ja005809q.

A new method for enantioconvergent synthesis has been developed. The strategy relies on the combination of an asymmetric Horner-Wadsworth-Emmons (HWE) reaction and a palladium-catalyzed allylic substitution. Different alpha-oxygen-substituted, racemic aldehydes were initially transformed by asymmetric HWE reactions into mixtures...

Structural Aspects of the Dehydration and Dehydroxylation of gamma-Titanium Phosphate, gamma-Ti(PO(4))(H(2)PO(4)).2H(2)O.

Inorganic chemistry

Krogh Andersen AM, Norby P.
PMID: 11670567
Inorg Chem. 1998 Aug 24;37(17):4313-4320. doi: 10.1021/ic9801894.

The thermal transformations of gamma-titanium phosphate, gamma-Ti(PO(4))(H(2)PO(4)).2H(2)O, have been studied using thermogravimetric analysis, differential scanning calorimetry, X-ray powder diffraction, and temperature-resolved in-situ powder diffraction. The transformation sequence goes from gamma-Ti(PO(4))(H(2)PO(4)).2H(2)O over a new partially dehydrated form gamma'-Ti(PO(4))(H(2)PO(4)).(2-x)H(2)O (x approximately...

Quantum chemical investigation of mechanisms of silane oxidation.

Journal of the American Chemical Society

Mader MM, Norrby PO.
PMID: 11456818
J Am Chem Soc. 2001 Mar 07;123(9):1970-6. doi: 10.1021/ja001400p.

Several mechanisms for the peroxide oxidation of organosilanes to alcohols are compared by quantum chemical calculations, including solvation with the PCM method. Without doubt, the reaction proceeds via anionic, pentacoordinate silicate species, but a profound difference is found between...

10th European Congress of Clinical Microbiology and Infectious Diseases (ECCMID), Stockholm, Sweden 28--31 May 2000.

Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases

Norrby SR.
PMID: 11851702
Clin Microbiol Infect. 1999 Sep;5(9):511. doi: 10.1111/j.1469-0691.1999.tb00428.x.

No abstract available.

Experimental and quantum-mechanical investigation of the vinylsilane-iminium ion cyclization.

Organic & biomolecular chemistry

Kvaernø L, Norrby PO, Tanner D.
PMID: 12929645
Org Biomol Chem. 2003 Mar 21;1(6):1041-8. doi: 10.1039/b212333a.

A vinylsilane-ketiminium ion cyclization involving iminium species derived from amines 6 and 7 was investigated experimentally as a possible approach to some biologically interesting 1-azaspirocycles. However, even under conditions of microwave irradiation at high temperatures no such cyclization was...

A dynamic supramolecular system exhibiting substrate selectivity in the catalytic epoxidation of olefins.

Chemical communications (Cambridge, England)

Jónsson S, Odille FG, Norrby PO, Wärnmark K.
PMID: 15654399
Chem Commun (Camb). 2005 Jan 28;(4):549-51. doi: 10.1039/b411978a. Epub 2004 Dec 02.

A dynamic supramolecular system involving hydrogen bonding between a Mn(III) salen catalyst and a Zn(II) porphyrin receptor exhibits selectivity for pyridine appended cis-beta-substituted styrene derivatives over phenyl appended derivatives in a catalytic epoxidation reaction.

A comparison study on Raman scattering properties of alpha- and beta-MnO2.

Analytica chimica acta

Gao T, Fjellvåg H, Norby P.
PMID: 19646589
Anal Chim Acta. 2009 Aug 26;648(2):235-9. doi: 10.1016/j.aca.2009.06.059. Epub 2009 Jul 01.

In this comment to a recent paper [Anal. Chim. Acta 585 (2007) 241-245], we report a comparison study on Mn oxide-related compounds with different crystallographic forms, which distinguish between beta-MnO(2) and alpha-MnO(2) type materials via Raman scattering (RS) spectroscopy....

Showing 1 to 12 of 105 entries