Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Hans Fritz"'
Autor:
Helmut Schlemper, Heinz Wilhelm Rotter, M. Fletschinger, Christian Hasenfratz, Guo-Zen Ji, Hans Georg von Schnering, Leonhard Walz, Dietmar Putzas, Carol Ottaway, A. V. Satish, Thomas Breuer, Joachim Boele, Jürgen Willaredt, Karl Peters, Reinhard Schwesinger, Frederick G. Bordwell, Eva-Maria Peters, Tim Dambacher, Hans Fritz
Publikováno v:
Liebigs Annalen. 1996:1055-1081
The syntheses and properties of novel, extremely strong uncharged polyaminophosphazene bases up to a high level of steric hindrance are described. Most of the systems were readily prepared in up to molar quantities and conveniently recovered from the
Autor:
Hans Fritz, Meinrad Lugan, Gerhard Fischer, Dieter Hunkler, Kai Exner, Horst Prinzbach, Manfred Keller, Lothar Knothe
Publikováno v:
European Journal of Organic Chemistry. 2000:787-806
Of two very proximate syn-periplanar bisdiazenes (1,2) mono-, di-, tri- and tetra-N-oxides were prepared, representing six combinations of the individual NN/NNO/ONNO chromophores. According to DFT calculations (B3LYP/6-31G*), [2+2]photocycloaddition
Autor:
G. Rihs, Lothar Knothe, Hans Fritz, Dieter Hunkler, Kai Exner, Gerhard Fischer, Horst Prinzbach
Publikováno v:
European Journal of Organic Chemistry. 2000:743-762
The chances for intramolecular imine/ene ( azetidines), diazene/ene ( 1,2-diazetidines), diazeneoxy/ene ( 1,2-diazetidine oxides) and diazenedioxiene ( 1,2-diazetidine dioxides) [2+2]photocycloadditions and for the isolation of the respective photopr
Publikováno v:
Colloid & Polymer Science. 277:145-152
Cationic polystyrene nanoparticles, as a model drug carrier system for nucleic acids, are capable of binding negatively charged oligonucleotides by multiple electrostatic interactions. The effect of the adsorption of phosphorothioate oligonucleotides
Autor:
Hans Fritz, Fabian Wahl, Johann-Peter Melder, Andreas Weiler, Thorsten Voss, Klaus Weber, Horst Prinzbach, Dieter Hunkler, Rolf Pinkos
Publikováno v:
Liebigs Annalen. 1997:2069-2088
Homo- and bishomododecahedral cage molecules with one and two OCO (OCH2) linkers installed into the parent pentagonal framework and featuring diverse functionalization patterns have been made available from pagodane precursors via highly expeditious
Autor:
Hans Fritz, Uwe Hugger, Manuela Falk-Heppner, Clemens Kaiser, Horst Prinzbach, Richard Krieger, Manfred Keller
Publikováno v:
Liebigs Annalen. 1997:1481-1497
The synthetic potential of the dianhydrocycloheptenepentols 3 and dianhydrocycloheptaneheptols 4 – ultimately available from tropilidene – as intermediates en route to 1,4-cis-diaminotetra(di)deoxyheptitols is studied. With standard bivalent N nu
Autor:
Grety Rihs, Jaroslav Kalvoda, Ivan Earnest, Hans Fritz, Eric Francotte, Manfred Mutter, Christoph Sigel, Fritz Raschdorf, Marcel J. J. Blommers
Publikováno v:
Helvetica Chimica Acta. 76:1539-1563
The 8-amino-5,6,7,8-tetrahydronaphth-2-oic acid (1), 8-(aminomethyl)-5,6,7,8-tetrahydronaphth-2-oic acid (2), and 8-(aminomethyl)naphth-2-oic acid (3) were synthesized in their protected forms as turn-inducing dipeptide mimics.Two of them (2 and 3) w
Publikováno v:
Helvetica Chimica Acta. 75:1052-1060
Catalytic double osmylation is described for a series of cyclohexadienes in acetone/H2O in the presence of the co-oxidant N-methylmorpholine N-oxide (NMO). The formation of polyols occurred stereospecifically with cyclohexadienes 3,7, and 11a, leadin
Publikováno v:
Helvetica Chimica Acta. 74:1095-1101
On the Synthesis of Derivatives of Pyrido[1,2-a]lazepine The conjugated pyridinium ylides of type 4 undergo 8π -electrocyclisation affording the heterobicyclic allenes 5 which, in the presence of H2O and H2O2, are subsequently transformed into the s
Publikováno v:
Helvetica Chimica Acta. 61:661-668
Effect of the Orientation of Substituents on the Chemical Shift of 13 II. 13C-NMR. Study of Substituted Spiro [cyclopropane-1′, 9-fluorenes] The 13C-NMR. spectra of spiro[cyclopropane-1′, 9-fluorenes] substituted at the cyclopropane ring have bee