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Showing 1 to 12 of 503 entries
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Radical-polar crossover reactions of vinylboron ate complexes.

Science (New York, N.Y.)

Kischkewitz M, Okamoto K, Mück-Lichtenfeld C, Studer A.
PMID: 28254937
Science. 2017 Mar 03;355(6328):936-938. doi: 10.1126/science.aal3803.

Vinyl boronic esters are valuable substrates for Suzuki-Miyaura cross-coupling reactions. However, boron-substituted alkenes have drawn little attention as radical acceptors, and the radical chemistry of vinylboron ate complexes is underexplored. We show here that carbon radicals add efficiently to...

Regio- and Stereoselective Radical Perfluoroalkyltriflation of Alkynes Using Phenyl(perfluoroalkyl)iodonium Triflates.

Organic letters

Wang X, Studer A.
PMID: 28517935
Org Lett. 2017 Jun 02;19(11):2977-2980. doi: 10.1021/acs.orglett.7b01215. Epub 2017 May 18.

A method for regio- and stereoselective anti-addition of the perfluoroalkyl and the triflate group of phenyl(perfluoroalkyl)iodonium triflates to alkynes is presented. The radical reaction uses cheap CuCl as a smart initiator and can be conducted in gram scale. The...

Abstracts from the 8th Annual Meeting of the Scientific Association of Swiss Radiation Oncology (SASRO).

Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]

Allal AS, Ares C, Dulguerov P, Tschanz E, Verdan C, Mhawech P, Riesterer O, Honer M, Vuong V, Jochum W, Zingg D, Bodis S, Ametamey S, Pruschy M, Inteeworn N, Ohlerth S, Höpfl G, Roos M, Wergin M, Rohrer Bley C, Gassmann M, Kaser-Hotz B, Berthou S, Aebersold DM, Ganapathipillai S, Streit B, Stalder D, Gruber G, Greiner RH, Zimmer Y, Lutters G, Krek W, Tenzer A, Hofstetter B, Bonny C, Azria A, Larbouret C, Cunat S, Ozsahin M, Zouhair A, Gourgou S, Martineau P, Evans DB, Romieu G, Pujol P, Pèlegrin A, Heuberger J, Kestenholz P, Taverna Ch, Lardinois D, Jörger M, Schneiter D, Jerman M, Weder W, Stahel R, Bodis S, Vees H, Mach N, Hügli A, Balmer Majno S, Beer KT, Friedrich EE, Ciernik IF, Stanek N, Taverna C, Greiner R, Mahler F, Landmann Ch, Studer G, Bernier J, Gallino A, Juelke PD, Hafner HP, Jamshidi P, Erne P, Resink TJ, Thum P, Notter M, Bargetzi M, Suleiman M, Luthi JC, Bieri S, Curschmann J, Pajic B, Kranzbühler H, Lippold B, Ueltschi G, Bonetti M, Nasi ML, Price KN, Castiglione-Gertsch M, Rudenstam CM, Holmberg SB, Lindtner J, Gol-Ouh R, Collins J, Crivellari D, Carbone A, Thürlimann B, Simoncini E, Fey MF, Gelber RD, Coates AS, Goldhirsch A, Jeanneret Sozzi W, Kramar A, Mirimanoff RO, Azria D, Taussky D, Becker M, Kranzbuehler H, Weitzel M, Bortoluzzi L, Behrensmeier F, Isaak B, Pasche P, Luthi F, Weber DC, Lomax AJ, Rutz HP, Pedroni ES, Verwey J, Goitein G, Timmermann B, Lomax A, Bolsi A, Weber D, Bentzen SM, Khalil AA, Saunders MI, Horiot JC, Van den Bogaert W, Cummings BJ, Dische S, Slosman DO, Kebdani T, Allaoua M, Stadelmann O, Stupp R, Pica A, Dubois JB, Oehler C, Ulmer U, Lütolf UM, Huser M, Burger C, Szekely G, Davis JB, Gervaz P, Gertsch P, Morel P, Roth AD, Zenklusen H, Schott A, Curti G, Schefer H, Kolotas C, Thalmann G, Vetterli D, Kemmerling L, Mini R, Rouzaud M, Nouet P, Mollà M, Escudé L, Miralbell R, Beer K, von Briel C, Jichlinski P, Guillou L, Fogliata A, Nicolini G, Cozzi L, Hafner HP, Hueber P, Szczerba D, Born EJ, Dipasquale G, Jargy C, Munier F, Balmer A, Do HP, Pasche G, Wang H, Moeckli R, Boehringer T, Coray A, Lin S, Pedroni E, Rutz H, Baumert BG, Norton IA, Schoenmaker E, Krayenbühl J, Bründler MA, Allemann K, Laluhovà D, Collen T, Coucke P, Ries G, Rufibach K, Huguenin P, Abdou M, Girardet C, Vees HJ, Bigler R, Özsoy O, Bouville S, Corminboeuf F, Betz M, Matzinger O, Tebeu P, Popowski Y, Verkooijen H, Bouchardy C, Ludicke F, Usel M, Major A, Merçay A, Pache G, Bulling S, Bressan S, Valley JF, Motta M, Presilla S, Richetti A, Franzetti A, Pesce G.
PMID: 27137923
Strahlenther Onkol. 2004 Jun;180:89-108. doi: 10.1007/BF03356735.

No abstract available.

Decarboxylative polymerization of 2,6-naphthalenedicarboxylic acid at surfaces.

Journal of the American Chemical Society

Gao HY, Held PA, Knor M, Mück-Lichtenfeld C, Neugebauer J, Studer A, Fuchs H.
PMID: 24937642
J Am Chem Soc. 2014 Jul 09;136(27):9658-63. doi: 10.1021/ja5033875. Epub 2014 Jun 26.

Metal-catalyzed polymerization of 2,6-naphthalenedicarboxylic acid (NDCA) to form poly-2,6-naphthalenes at various surfaces is reported. Polymerizations occur via initial formal dehydrogenation of self-assembled diacids with subsequent decarboxylation to give polymeric bisnaphthyl-Cu species at elevated temperature as intermediate structures (

Patella instability in children and adolescents.

EFORT open reviews

Hasler CC, Studer D.
PMID: 28461943
EFORT Open Rev. 2017 Mar 13;1(5):160-166. doi: 10.1302/2058-5241.1.000018. eCollection 2016 May.

Patellar instabilities are the most common knee pathologies during growth. Congenital dislocations are rare. Extensive, early soft tissue releases relocate the extensor mechanism and may enable normal development of the femoro-patellar anatomy.Conservative management is the preferred strategy after a...

Generation of Aryl Radicals through Reduction of Hypervalent Iodine(III) Compounds with TEMPONa: Radical Alkene Oxyarylation.

Chemistry (Weinheim an der Bergstrasse, Germany)

Hartmann M, Li Y, Mück-Lichtenfeld C, Studer A.
PMID: 26834017
Chemistry. 2016 Mar 01;22(10):3485-3490. doi: 10.1002/chem.201504852. Epub 2016 Feb 02.

A novel method for selective generation of aryl radicals from diaryliodonium salts and iodanylidene malonates with sodium 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPONa) as a single-electron transfer (SET) reducing reagent is described. In the presence of various alkenes, aryl radicals formed after SET-reduction...

C-F Activation in Perfluorinated Arenes with Isonitriles under UV-Light Irradiation.

Chemistry (Weinheim an der Bergstrasse, Germany)

Dewanji A, Mück-Lichtenfeld C, Bergander K, Daniliuc CG, Studer A.
PMID: 26189958
Chemistry. 2015 Aug 24;21(35):12295-8. doi: 10.1002/chem.201502298. Epub 2015 Jul 17.

Due to the great value of fluorinated arenes in agrochemistry, medicinal chemistry and materials science, development of methods for preparation of fluorinated arenes is of high importance. They can be either accessed by arene fluorination or by partial arene...

Silylated Cyclohexadienes: New Alternatives to Tributyltin Hydride in Free Radical Chemistry We are grateful to Prof. Dr. Dieter Seebach for generous financial support and to Prof. Dr. Erick M. Carreira for helpful discussions during the preparation of the manuscript. We also thank the Swiss Science National Foundation (2100-055280.98/1) for funding our work.

Angewandte Chemie (International ed. in English)

Studer A, Amrein S.
PMID: 11028038
Angew Chem Int Ed Engl. 2000 Sep 01;39(17):3080-3082. doi: 10.1002/1521-3773(20000901)39:17<3080::aid-anie3080>3.0.co;2-e.

No abstract available.

Radical transfer hydrosilylation/cyclization using silylated cyclohexadienes.

Organic letters

Amrein S, Timmermann A, Studer A.
PMID: 11463315
Org Lett. 2001 Jul 26;3(15):2357-60. doi: 10.1021/ol016160c.

[reaction: see text] A new method for mild metal-free hydrosilylation is described. Silylated cyclohexadienes are used as radical transfer hydrosilylating reagents for various double and triple bonds. A trialkylsilane is transferred from a cyclohexadiene moiety to an alkene. The...

Silylated cyclohexadienes as new radical chain reducing reagents: preparative and mechanistic aspects.

Journal of the American Chemical Society

Studer A, Amrein S, Schleth F, Schulte T, Walton JC.
PMID: 12733911
J Am Chem Soc. 2003 May 14;125(19):5726-33. doi: 10.1021/ja0341743.

Various silylated 1,4-cyclohexadienes are presented as superior tin hydride substitutes for the conduction of various radical chain reductions. Debrominations, deiodinations, and deselenations can be performed using these environmentally benign reagents. Furthermore, Barton-McCombie-type deoxygenations using silylated cyclohexadienes are described. Radical...

No stirring necessary: parallel carbonylation of aryl halides with CO and various alcohols under pressure.

The Journal of organic chemistry

Blaser HU, Diggelmann M, Meier H, Naud F, Scheppach E, Schnyder A, Studer M.
PMID: 12713389
J Org Chem. 2003 May 02;68(9):3725-8. doi: 10.1021/jo034112v.

The parallel carbonylation of aryl halides with 6-25 bar of CO in 1-mL vials in a standard autoclave was investigated. 4-Bromoacetophenone and 2-chloropyridine were used as model substrates with 102 different O-nucleophiles (primary and secondary alcohols, phenols). No inertization...

Two types of intramolecular homolytic substitution reactions at group XIV atoms: unusual radical 1,4-Sn shifts from Si to C and carbonylative SHi reaction at Si.

Chemical communications (Cambridge, England)

Studer A, Amrein S, Matsubara H, Schiesser CH, Doi T, Kawamura T, Fukuyama T, Ryu I.
PMID: 12778729
Chem Commun (Camb). 2003 May 21;(10):1190-1. doi: 10.1039/b301755a.

4-[(Trimethylstannyl)diphenylsilyl]butanoyl radical, arising from the corresponding 3-(stannylsilyl)propyl radical and CO, undergoes an SHi reaction at Si with extrusion of trimethyltin radical to give silacyclopentanone. The parent 3-(stannylsilyl)propyl radical was also found to isomerize to (3-stannylpropyl)silyl radical via a 1,4-Sn...

Showing 1 to 12 of 503 entries