Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Markus Kamieth"'
Autor:
Uta P. Seelbach, Jens Panitzky, Roland Boese, Arne E. Wigger, Markus Kamieth, Ulrich Burkert, Dieter Bläser, Jolanta Polkowska, Frank-Gerrit Klärner, Michael Baumann
Publikováno v:
European Journal of Organic Chemistry. 2004:1405-1423
Molecular tweezers and clips of type 1−3 substituted with OAc, OH, OCONHPh, OMe, OCH2COOR and OCH2CONHR groups in the central spacer units have been synthesized by modification, by standard methods, either of the known diacetoxy-substituted derivat
Publikováno v:
Journal of Physical Organic Chemistry. 13:604-611
Publikováno v:
Chemistry - A European Journal. 5:1700-1707
The molecular tweezers 1 and 2 are selective receptors for electron-deficient aromatic and aliphatic substrates forming, for example, complexes with onium salts such as N-methylpyrazinium iodide, depending on the size and the electrostatic potential
Autor:
Frank-Gerrit Klärner, Markus Kamieth
Publikováno v:
Journal für praktische Chemie. 341:245-251
The results of 1H NMR binding studies of mole-cular tweezers 1a with various aliphatic and aromatic cations in organic solvents are described. By the use of the viologene substrates 11 and 12 bearing bulky endgroups and therefore having a dumb-bell t
Publikováno v:
Angewandte Chemie. 110:3497-3500
Publikováno v:
Chemie in unserer Zeit. 31:94-97
Autor:
Roland Boese, Ulf Naatz, Markus Kamieth, Johannes Benkhoff, Frank-Gerrit Klärner, Ulrich Burkert
Publikováno v:
Angewandte Chemie. 108:1195-1198
Autor:
Markus Kamieth, Frank-Gerrit Klaerner
Publikováno v:
ChemInform. 30
Publikováno v:
Angewandte Chemie (International ed. in English). 37(23)
The molecular tweezers 1 a and 1 b have an electrostatic potential on the concave sides of the molecule which is surprisingly negative for hydrocarbons. According to semiempirical calculations this is a general phenomenon in nonconjugated π-electron