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Showing 13 to 24 of 293 entries
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Multicenter strategy for the development of catalytic enantioselective nucleophilic alkylation of ketones: Me2Zn addition to alpha-ketoesters.

Angewandte Chemie (International ed. in English)

Funabashi K, Jachmann M, Kanai M, Shibasaki M.
PMID: 14618585
Angew Chem Int Ed Engl. 2003 Nov 17;42(44):5489-92. doi: 10.1002/anie.200351650.

No abstract available.

Argon laser peripheral iridoplasty for plateau iris associated with iridociliary cysts: a case report.

Cases journal

Ang GS, Bochmann F, Azuara-Blanco A.
PMID: 19055704
Cases J. 2008 Dec 02;1(1):368. doi: 10.1186/1757-1626-1-368.

INTRODUCTION: Plateau iris is recognised as an important cause of primary angle closure glaucoma. The management of this condition generally comprises laser peripheral iridotomy and iridoplasty, to remove any component of relative pupillary block and to widen the iridotrabecular...

High energy electron crystal spectrometer.

The Review of scientific instruments

Kudyakov T, Jochmann A, Zeil K, Kraft S, Finken KH, Schramm U, Willi O.
PMID: 19655991
Rev Sci Instrum. 2009 Jul;80(7):076106. doi: 10.1063/1.3170508.

A spectrometer has been developed to measure relativistic electrons produced in different types of plasmas, such as tokamak plasmas and laser produced plasmas. The spectrometer consists of nine Y2SiO5:Ce crystals, which are shielded by stainless steel filters. The absolute...

Absolute charge calibration of scintillating screens for relativistic electron detection.

The Review of scientific instruments

Buck A, Zeil K, Popp A, Schmid K, Jochmann A, Kraft SD, Hidding B, Kudyakov T, Sears CM, Veisz L, Karsch S, Pawelke J, Sauerbrey R, Cowan T, Krausz F, Schramm U.
PMID: 20370164
Rev Sci Instrum. 2010 Mar;81(3):033301. doi: 10.1063/1.3310275.

We report on new charge calibrations and linearity tests with high-dynamic range for eight different scintillating screens typically used for the detection of relativistic electrons from laser-plasma based acceleration schemes. The absolute charge calibration was done with picosecond electron...

Northern hemisphere biogeography of Cerastium (Caryophyllaceae): insights from phylogenetic analysis of noncoding plastidnucleotide sequences.

American journal of botany

Scheen AC, Brochmann C, Brysting AK, Elven R, Morris A, Soltis DE, Soltis PS, Albert VA.
PMID: 21653450
Am J Bot. 2004 Jun;91(6):943-52. doi: 10.3732/ajb.91.6.943.

Phylogenetic relationships and biogeography of the genus Cerastium were studied using sequences of three noncoding plastid DNA regions (trnL intron, trnL-trnF spacer, and psbA-trnH spacer). A total of 57 Cerastium taxa was analyzed using two species of the putative...

Allyl strontium compounds: synthesis, molecular structure and properties.

Dalton transactions (Cambridge, England : 2003)

Jochmann P, Davin JP, Maslek S, Spaniol TP, Sarazin Y, Carpentier JF, Okuda J.
PMID: 22692266
Dalton Trans. 2012 Aug 14;41(30):9176-81. doi: 10.1039/c2dt30743j. Epub 2012 Jun 12.

The synthesis and attempted isolation of neutral bis(allyl)strontium [Sr(C(3)H(5))(2)] (1) resulted in the isolation of potassium tris(allyl)strontiate K[Sr(C(3)H(5))(3)] (2). In situ generated 1 shows a pronounced Brønsted basicity, inducing polymerisation of THF. Ate complex 2 crystallises as [K(THF)(2){Sr(C(3)H(5))(3)}(THF)](∞) (2·(THF)(3))....

Microwave-assisted nonionic surfactant extraction of aliphatic hydrocarbons from petroleum source rock.

Analytica chimica acta

Akinlua A, Jochmann MA, Laaks J, Ewert A, Schmidt TC.
PMID: 21458630
Anal Chim Acta. 2011 Apr 08;691(1):48-55. doi: 10.1016/j.aca.2011.02.018. Epub 2011 Feb 12.

The extraction of aliphatic hydrocarbons from petroleum source rock using nonionic surfactants with the assistance of microwave was investigated and the conditions for maximum yield were determined. The results showed that the extraction temperatures and kinetic rates have significant...

Carbon isotope ratio analysis of steroids by high-temperature liquid chromatography-isotope ratio mass spectrometry.

Analytical chemistry

Zhang L, Thevis M, Piper T, Jochmann MA, Wolbert JB, Kujawinski DM, Wiese S, Teutenberg T, Schmidt TC.
PMID: 24491121
Anal Chem. 2014 Mar 04;86(5):2297-302. doi: 10.1021/ac403353x. Epub 2014 Feb 12.

Generally, compound-specific isotope analysis of steroids is carried out by gas chromatography combined with isotope ratio mass spectrometry. Thus, a derivatization of the steroids prior to the measurement is compulsory, and a correction of the isotopic data is often...

A European phylogeography of Rhinanthus minor compared to Rhinanthus angustifolius: unexpected splits and signs of hybridization.

Ecology and evolution

Vrancken J, Brochmann C, Wesselingh RA.
PMID: 22957160
Ecol Evol. 2012 Jul;2(7):1531-48. doi: 10.1002/ece3.276.

Rhinanthus minor and Rhinanthus angustifolius (Orobanchaceae) are annual hemiparasites, which occur sympatrically in Europe and are known to hybridize. We studied chloroplast and nuclear (amplified fragment length polymorphism [AFLP]) diversity in R. minor and compared genetic structuring in this...

Isocyanide insertion into Au-H bonds: first gold iminoformyl complexes.

Chemical communications (Cambridge, England)

Fernandez-Cestau J, Rocchigiani L, Pintus A, Rama RJ, Budzelaar PHM, Bochmann M.
PMID: 30251719
Chem Commun (Camb). 2018 Oct 09;54(81):11447-11450. doi: 10.1039/c8cc06409a.

Isocyanides insert into gold(iii)-hydrogen bonds to give the first examples of gold iminoformyl complexes. The reaction is initiated by catalytic amounts of radicals; DFT calculations indicate that this is an equilibrium reaction driven forward by isocyanide in sufficient excess...

Thermally Stable Gold(III) Alkene and Alkyne Complexes: Synthesis, Structures, and Assessment of the trans-Influence on Gold-Ligand Bond Enthalpies.

Chemistry (Weinheim an der Bergstrasse, Germany)

Chambrier I, Rocchigiani L, Hughes DL, Budzelaar PMH, Bochmann M.
PMID: 29846025
Chemistry. 2018 Aug 06;24(44):11467-11474. doi: 10.1002/chem.201802160. Epub 2018 Jul 06.

The reaction of [C^C)Au(OEt

Carbon-sulfur bond formation by reductive elimination of gold(iii) thiolates.

Dalton transactions (Cambridge, England : 2003)

Currie L, Rocchigiani L, Hughes DL, Bochmann M.
PMID: 29632921
Dalton Trans. 2018 May 08;47(18):6333-6343. doi: 10.1039/c8dt00906f.

Whereas the reaction of the gold(iii) pincer complex (C^N^C)AuCl with 1-adamantyl thiol (AdSH) in the presence of base affords (C^N^C)AuSAd, the same reaction in the absence of base leads to formation of aryl thioethers as the products of reductive...

Showing 13 to 24 of 293 entries