Works by Wirz, Jakob

Results: 62

The Photoenolization of 2-Methylacetophenone and Related Compounds.

Published in:

Helvetica Chimica Acta, 1977, v. 60, n. 8, p. 2595, doi. 10.1002/hlca.19770600813

By:

Haag, Roland;
Wirz, Jakob;
Wagner, Peter J.

Publication type:

Article

Conjugative Stabilization in an 'Antiaromatic' System: The Conformational Mobility of 1,5-Bisdehydro[12]annulene.

Published in:

Helvetica Chimica Acta, 1977, v. 60, n. 8, p. 2522, doi. 10.1002/hlca.19770600805

By:

Gygax, Ruedi;
Wirz, Jakob;
Sprague, Joseph T.;
Allinger, Norman L.

Publication type:

Article

The photoenol tautomer of 5-methyl-1, 4-naphthoquinone.

Published in:

Helvetica Chimica Acta, 1977, v. 60, n. 1, p. 38, doi. 10.1002/hlca.19770600106

By:

Rommel, Erika;
Wirz, Jakob

Publication type:

Article

Photolysis of the azo-precursors of 2,3- and 1,8-naphtoquinodimethane. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1976, v. 59, n. 6, p. 2273, doi. 10.1002/hlca.19760590644

By:

Gisin, Markus;
Wirz, Jakob

Publication type:

Article

Electronic Structure and Photophysical Properties of Planar Conjugated Hydrocarbons with 4n-Membered Rings. I. Photoelectron Spectra of 1,5,9-Tridehydro[12]-annulene and Related Compounds.

Published in:

Helvetica Chimica Acta, 1976, v. 59, n. 5, p. 1647, doi. 10.1002/hlca.19760590525

By:

Wirz, Jakob

Publication type:

Article

Electronic Structure and Photophysical Properties of Isoindole and its Benzo[ f]- and Dibenzo[ e,g]-Derivatives.

Published in:

Helvetica Chimica Acta, 1976, v. 59, n. 4, p. 1054, doi. 10.1002/hlca.19760590411

By:

Rettig, Wolfgang;
Wirz, Jakob

Publication type:

Article

The consequences of σ and π conjugative interactions in mono-, di- and triacetylenes. A photoelectron spectroscopic investigation.

Published in:

Helvetica Chimica Acta, 1975, v. 58, n. 8, p. 2620, doi. 10.1002/hlca.19750580847

By:

Brogli, Franz;
Heilbronner, Edgar;
Wirz, Jakob;
Kloster-Jensen, Else;
Bergman, Robert G.;
Vollhardt, K. Peter C.;
Ashe, Arthur J.

Publication type:

Article

An Efficient Photosensitizer: O-Ethyl-1-thionaphthoate.

Published in:

Helvetica Chimica Acta, 1975, v. 58, n. 6, p. 1768, doi. 10.1002/hlca.19750580629

By:

Gisin, Markus;
Wirz, Jakob

Publication type:

Article

1,5-Cyclooctadiyne. Preparation and Reactivity.

Published in:

Helvetica Chimica Acta, 1975, v. 58, n. 1, p. 162, doi. 10.1002/hlca.19750580121

By:

Kloster-Jensen, Else;
Wirz, Jakob

Publication type:

Article

Electronic States of 1,5-Cyclooctadiyne Radical Cation and of Related Systems: The electronic structure of cis-bent carbon-carbon triple bonds.

Published in:

Helvetica Chimica Acta, 1974, v. 57, n. 5, p. 1265, doi. 10.1002/hlca.19740570504

By:

Bieri, Gerhard;
Heilbronner, Edgar;
Kloster-Jensen, Else;
Schmelzer, Andreas;
Wirz, Jakob

Publication type:

Article

Primary Photophysical and Photochemical Processes in the Photoreduction of a Naphthoquinone methide: 2-phenylnaphtho[1, 8- bc]furan-5-one.

Published in:

Helvetica Chimica Acta, 1974, v. 57, n. 5, p. 1283, doi. 10.1002/hlca.19740570505

By:

Wirz, Jakob

Publication type:

Article

Exploiting Tautomerism for Switching and Signaling.

Published in:

Angewandte Chemie International Edition, 2009, v. 48, n. 42, p. 7875, doi. 10.1002/anie.200903301

By:

Antonov, Liudmil;
Deneva, Vera;
Simeonov, Svilen;
Kurteva, Vanya;
Nedeltcheva, Daniela;
Wirz, Jakob

Publication type:

Article

Multistep Electron Transfer in Oligopeptides: Direct Observation of Radical Cation IntermediatesThis work was supported by the Swiss National Science Foundation.

Published in:

Angewandte Chemie International Edition, 2005, v. 44, n. 26, p. 4073, doi. 10.1002/anie.200500391

By:

Bernd Giese;
Matthias Napp;
Olivier Jacques;
Hassen Boudebous;
Alexander M. Taylor;
Jakob Wirz

Publication type:

Article

The Enol of Mandelic Acid, Detection, Acidity in Aqueous Solution, and Estimation of the Keto-Enol Equilibrium Constant and Carbon Acidity of Mandelic Acid.

Published in:

Angewandte Chemie International Edition, 1990, v. 29, n. 7, p. 792, doi. 10.1002/anie.199007921

By:

Chiang, Y.;
Kresge, Alexander J.;
Pruszynski, P.;
Schepp, N. P.;
Wirz, Jakob

Publication type:

Article

The Tautomeric Equilibrium between Cyclopentadienyl-1-carboxylic Acid and Fulvene-6,6-diol in Aqueous Solution.

Published in:

Angewandte Chemie International Edition, 1990, v. 29, n. 7, p. 790, doi. 10.1002/anie.199007901

By:

Urwyler, Bernhard;
Wirz, Jakob

Publication type:

Article

Reversible Photoisomerization of Ketene to Ethynol.

Published in:

Angewandte Chemie International Edition, 1990, v. 29, n. 4, p. 411, doi. 10.1002/anie.199004111

By:

Hochstrasser, Remo;
Wirz, Jakob

Publication type:

Article

Diels-Alder Adducts on the b Side of Naphthalene: Rapid Cycloreversion of o-Quinodimethanes.

Published in:

Angewandte Chemie International Edition, 1989, v. 28, n. 10, p. 1353, doi. 10.1002/anie.198913531

By:

Grimme, Wolfram;
Höner, Peter;
Kämmerling, Heinz Theo;
Waldraff, Robert;
Wirz, Jakob

Publication type:

Article

Ethynol: Photochemical Generation in an Argon Matrix, IR Spectrum, and Photoisomerization to Ketene.

Published in:

Angewandte Chemie International Edition, 1989, v. 28, n. 2, p. 181, doi. 10.1002/anie.198901811

By:

Hochstrasser, Remo;
Wirz, Jakob

Publication type:

Article

Preparative UV-Laser Photochemistry: A Biscarbene Intermediate in the Synthesis of a 5,6-Dihydrodibenzo[ a,e]cyclooctene Containing a trans-Double Bond.

Published in:

Angewandte Chemie International Edition, 1988, v. 27, n. 6, p. 853, doi. 10.1002/anie.198808531

By:

Hannemann, Klaus;
Wirz, Jakob

Publication type:

Article

The Cyclohepta[ def]carbazolium Ion.

Published in:

Angewandte Chemie International Edition, 1988, v. 27, n. 4, p. 585, doi. 10.1002/anie.198805851

By:

Freiermuth, Beat;
Wirz, Jakob

Publication type:

Article

The Phenol ⇌ 2,4-Cyclohexadienone Equilibrium in Aqueous Solution.

Published in:

Angewandte Chemie International Edition, 1986, v. 25, n. 4, p. 344, doi. 10.1002/anie.198603441

By:

Capponi, Marco;
Gut, Ivo;
Wirz, Jakob

Publication type:

Article

Synthesis and Valence Isomerization of 2,7-Dihydro-2,2,7,7-tetramethylpyrene.

Published in:

Angewandte Chemie International Edition, 1982, v. 21, n. 8, p. 618, doi. 10.1002/anie.198206181

By:

Ackermann, Jean;
Angliker, Herbert;
Hasler, Erich;
Wirz, Jakob

Publication type:

Article

Synthesis and Valence Isomerization of 2, 7-Dihydro-2, 2, 7, 7-tetramethylpyrene.

Published in:

Angewandte Chemie International Edition, 1982, v. 21, n. S8, p. 1429, doi. 10.1002/anie.198214290

By:

Ackermann, Jean;
Angliker, Herbert;
Hasler, Erich;
Wirz, Jakob

Publication type:

Article

The Electronic Triplet State of a Peralkylated Cyclobutadiene.

Published in:

Angewandte Chemie International Edition, 1981, v. 20, n. 2, p. 192, doi. 10.1002/anie.198101921

By:

Wirz, Jakob;
Krebs, Adolf;
Schmalstieg, Hermann;
Angliker, Herbert

Publication type:

Article

Acidity of Acetophenone Enol in Aqueous Solution.

Published in:

Angewandte Chemie International Edition, 1979, v. 18, n. 8, p. 617, doi. 10.1002/anie.197906171

By:

Haspra, Pavel;
Sutter, Alfred;
Wirz, Jakob

Publication type:

Article

1,5-Cyclooctadiyne.

Published in:

Angewandte Chemie International Edition, 1973, v. 12, n. 8, p. 671, doi. 10.1002/anie.197306711

By:

Kloster-Jensen, Else;
Wirz, Jakob

Publication type:

Article

22,4Dinitrobenzylpyridine DNBP: A Potential LightActivated Proton Shuttle.

Published in:

Helvetica Chimica Acta, 2009, v. 92, n. 10, p. 1909, doi. 10.1002/hlca.200900191

By:

Catrin Goeschen;
Rainer Herges;
Josef Richter;
Jakob Wirz

Publication type:

Article

Protonation Equilibria of Hoechst 33258 in Aqueous Solution.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 1, p. 53

By:

Manfred Ladinig;
Werner Leupin;
Markus Meuwly;
Michal Respondek;
Jakob Wirz;
Vincent Zoete

Publication type:

Article

Tautomerization of Phenols, Part III , The Anthrone−Anthrol Equilibrium in Aqueous Solution.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 12, p. 3796, doi. 10.1002/1522-2675(20011219)84:12<3796::AID-HLCA3796>3.0.CO;2-T

By:

Freiermuth, Beat;
Hellrung, Bruno;
Peterli, Stefan;
Schultz, Marie-France;
Wintgens, David;
Wirz, Jakob

Publication type:

Article

Photochemical Reaction Mechanisms of 2-Nitrobenzyl Compounds in Solution, I. 2-Nitrotoluene: Thermodynamic and Kinetic Parameters of the aci-Nitro Tautomer.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1441, doi. 10.1002/1522-2675(20010613)84:6<1441::AID-HLCA1441>3.0.CO;2-W

By:

Schwörer, Markus;
Wirz, Jakob

Publication type:

Article

Powerful Oxidizing Properties of a Planar [8]Annulene: Tetrakis(perfluorocyclobuta)cyclooctatetraene and Its Radical Anion.

Published in:

Helvetica Chimica Acta, 1999, v. 82, n. 9, p. 1434, doi. 10.1002/(SICI)1522-2675(19990908)82:9<1434::AID-HLCA1434>3.0.CO;2-7

By:

Gerson, Fabian;
Huber, Walter;
Merstetter, Pascal;
Persy, Gaby;
Soulen, Robert L.;
Spöndlin, Christoph;
Wirz, Jakob

Publication type:

Article

A Synthetic Receptor for β,β-Carotene: Towards an enzyme mimic for central cleavage.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1521, doi. 10.1002/hlca.19980810555

By:

French, Richard R.;
Wirz, Jakob;
Woggon, Wolf-Dietrich

Publication type:

Article

Flash Photolysis of 5-Methyl-1,4-naphthoquinone in Aqueous Solution: Kinetics and mechanism of photoenolization and of enol trapping.

Published in:

Helvetica Chimica Acta, 1997, v. 80, n. 4, p. 1106, doi. 10.1002/hlca.19970800408

By:

Chiang, Yvonne;
Kresge, A. Jerry;
Hellrung, Bruno;
Schünemann, Patrick;
Wirz, Jakob

Publication type:

Article

Triplet Energy of 2, 2-Dimethylisoindene from Electron-Energy-Loss Spectroscopy and Photoinduced Triplet Energy Transfer.

Published in:

Helvetica Chimica Acta, 1994, v. 77, n. 6, p. 1541, doi. 10.1002/hlca.19940770609

By:

Allan, Michael;
Asmis, Knut R.;
Houar, Sarah El;
Haselbach, Edwin;
Capponi, Marco;
Urwyler, Bernhard;
Wirz, Jakob

Publication type:

Article

Transient Radicals Formed by Electron Transfer between inorganic ions and excited aromatic molecules in polar solvents.

Published in:

Helvetica Chimica Acta, 1993, v. 76, n. 3, p. 1319, doi. 10.1002/hlca.19930760319

By:

Mac, Marek;
Wirz, Jakob;
Najbar, Jan

Publication type:

Article

The Azo(Azoxy) Functionality as a π2 Component in Photo [2+2] cycloadditions ' syn'- and ' anti'-3,4-diazatricyclo[4.2.2.22,5]dodeca-3,7-diene, syntheses, photolyses, X-ray-structure analysis, and PE spectra.

Published in:

Helvetica Chimica Acta, 1988, v. 71, n. 8, p. 1937, doi. 10.1002/hlca.19880710813

By:

Marterer, Wolfgang;
Prinzbach, Horst;
Rihs, Grety;
Wirz, Jakob;
Lecoultre, Jaques;
Heilbronner, Edgar

Publication type:

Article

Conventional and Laser Photolysis of a Bisdiazo Compound.

Published in:

Helvetica Chimica Acta, 1988, v. 71, n. 8, p. 1841, doi. 10.1002/hlca.19880710802

By:

Hannemann, Klaus;
Wirz, Jakob;
Riesen, Andreas

Publication type:

Article

Photochemical Ring Slippage of Bis(pentafluorophenyl)titanocene: Reaction kinetics and matrix isolation of the primary photoproduct.

Published in:

Helvetica Chimica Acta, 1988, v. 71, n. 8, p. 1858, doi. 10.1002/hlca.19880710803

By:

Klingert, Bernd;
Roloff, Achim;
Urwyler, Bernhard;
Wirz, Jakob

Publication type:

Article

Direct Observation of Acetophenone Enol Formed by Photohydration of Phenylacetylene.

Published in:

Helvetica Chimica Acta, 1986, v. 69, n. 6, p. 1331, doi. 10.1002/hlca.19860690606

By:

Chiang, Yvonne;
Kresge, A. Jerry;
Capponi, Marco;
Wirz, Jakob

Publication type:

Article

Conjugated Biradical Intermediates: Spectroscopic, Kinetic, and Trapping Studies of 2,2-Dimethyl-1,3-perinaphthadiyl.

Published in:

Helvetica Chimica Acta, 1985, v. 68, n. 3, p. 777, doi. 10.1002/hlca.19850680328

By:

Hasler, Erich;
Gassmann, Ernst;
Wirz, Jakob

Publication type:

Article

Photoisomerization pathways of 8,16-methno[2.2]metacyclopane-1,9-diene. A model case for adiabatic electrocyclic ring closure in the excited singlet state.

Published in:

Helvetica Chimica Acta, 1984, v. 67, n. 1, p. 305, doi. 10.1002/hlca.19840670137

By:

Wirz, Jakob;
Persy, Gabriele;
Rommel, Erika;
Murata, Ichiro;
Naksuji, Kazuhiro

Publication type:

Article

The He(Iα) Photoelectron Spectra of the Perfluoroderivatives of Trisannelated Benzenes and Tetrakisannelated Cyclooctatetraenes.

Published in:

Helvetica Chimica Acta, 1984, v. 67, n. 1, p. 47, doi. 10.1002/hlca.19840670107

By:

Heilbronner, Edgar;
Wirz, Jakob;
Soulen, Robert L.

Publication type:

Article

Competitive Formation of Ylide and Carbene Intermediates from 1π,π*-Excited α,β-Unsaturated γ,δ-Epoxyketones.

Published in:

Helvetica Chimica Acta, 1983, v. 66, n. 8, p. 2489, doi. 10.1002/hlca.19830660814

By:

Bischofberger, Norbert;
Frei, Bruno;
Wirz, Jakob

Publication type:

Article

Electronic Absorption Spectra of Planar, Conjugated Biradicals in the Lowest Triplet State.

Published in:

Helvetica Chimica Acta, 1983, v. 66, n. 5, p. 1556, doi. 10.1002/hlca.19830660523

By:

Gisin, Markus;
Wirz, Jakob

Publication type:

Article

Photodimerization of Solid Pleiadiene; Isomerization and Cycloreversion of the Dimer.

Published in:

Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2830, doi. 10.1002/hlca.19810640845

By:

Hazell, Alan C.;
Pagni, Richard M.;
Persy, Gabriele;
Rommel, Erika;
Wirz, Jakob

Publication type:

Article

Cyclooct-1-en-5-yne. Preparation, spectroscopic characteristics and chemical reactivity.

Published in:

Helvetica Chimica Acta, 1978, v. 61, n. 5, p. 1663, doi. 10.1002/hlca.19780610514

By:

Leupin, Werner;
Wirz, Jakob

Publication type:

Article

Photolysis and Pyrolysis of N-Methyl Isoindole.

Published in:

Helvetica Chimica Acta, 1978, v. 61, n. 1, p. 444, doi. 10.1002/hlca.19780610139

By:

Rettig, Wolfgang;
Wirz, Jakob

Publication type:

Article

2-Nitrobenzylarsonium Compounds That Photorelease Heavy-Atom Cholinergic Ligands for Time-Resolved Crystallographic Studies on Cholinesterases.

Published in:

Angewandte Chemie International Edition, 1998, v. 37, n. 19, p. 2691, doi. 10.1002/(SICI)1521-3773(19981016)37:19<2691::AID-ANIE2691>3.0.CO;2-7

By:

Peng, Ling;
Nachon, Florian;
Wirz, Jakob;
Goeldner, Maurice

Publication type:

Article

Synthesis and Characterization of Photolabile Compounds Releasing Noracetylcholine in the Microsecond Time Range.

Published in:

Angewandte Chemie International Edition, 1997, v. 36, n. 4, p. 398, doi. 10.1002/anie.199703981

By:

Peng, Ling;
Wirz, Jakob;
Goeldner, Maurice

Publication type:

Article

3 H-Indole.

Published in:

Angewandte Chemie International Edition, 1994, v. 33, n. 11, p. 1153, doi. 10.1002/anie.199411531

By:

Gut, Ivo G.;
Wirz, Jakob

Publication type:

Article