Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Hans Fritz"'
Autor:
Hans Fritz, Hanspeter Sauter, Paul Hug, Sven-Olov Lawesson, Tammo Winkler, B. S. Pedersen, S. Scheibye, Enno Logemann
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 87:525-534
By a new thiation reagent,1, 4, 11 the dimer of p-methoxyphenylthionophosphine sulfide, 3, a series of thioamides have been prepared in almost quantitative yields from the corresponding amides, Carbon-13 NMR spectra of tertiary thioamides of formic,
Autor:
Hans Fritz
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 93:559-569
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
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:
ChemInform. 22
Publikováno v:
ChemInform. 24