Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Erich Tauer"'
Autor:
Attila Demeter, Seiji Tobita, Haruo Shizuka, Klaas A. Zachariasse, Kengo Suzuki, Erich Tauer, Wolfgang Kühnle
Publikováno v:
Physical Chemistry Chemical Physics. 2:981-991
The thermally activated internal conversion (IC) taking place in 4-substituted 1-(dimethylamino)naphthalenes (14DMX) and 1-aminonaphthalenes (14ANX) with X=CN, Cl, H, CH3 and OCH3 was investigated in three solvents spanning the polarity scale, hexane
Autor:
Klaas A. Zachariasse, Erich Tauer, Olaf Morawski, Wolfgang Kühnle, Attila Demeter, Ingo Rückert
Publikováno v:
The Journal of Physical Chemistry A. 103:1958-1966
With the 1-aminonaphthalenes 1N5 and 1DMAN a fast radiationless process occurs in n-hexane, diethyl ether, and acetonitrile, which is shown to be internal conversion (IC). The IC reaction is slower with 1N4 and much less efficient with 1MAN and 1AN.
Publikováno v:
Research on Chemical Intermediates. 25:531-550
The deactivation of the singlet excited state of 9-cyano-10-(dimethylamino)anthracene (CDA) in a variety of solvents predominantly takes place by way of internal conversion (IC), with a yield of ~0.97 in n-propylcyanide, whereas intersystem crossing
Publikováno v:
Chemical Physics Letters. 274:372-382
From ab initio electronic structure calculations it has been predicted that 4-(dimethylamino)phenylacetylene (DACET) will undergo an exothermic intramolecular charge transfer (ICT) reaction with dual fluorescence even under isolated-molecule conditio
Publikováno v:
Liebigs Annalen. 1995:657-660
The photochemical properties of the di-Schiff base 2 have been investigated. The first reaction step of 2 in 2-propanol or in cyclohexane is an intramolecular photoreductive coupling affording the diazocine meso-4. Subsequent photoreactions of meso-4
Autor:
Erich Tauer
Publikováno v:
Synthesis. 2002:723-725
The new cyclic quaterbenzoxazole 5 and -imidazole 8 have been synthesized by cyclization of 3-amino-2-hydroxybenzamide (4) and the ammonium salt of 2,3-diaminobenzoic acid (7), respectively, with polyphosphoric acid. Bothcompounds represent a new het
Autor:
Erich Tauer
Publikováno v:
ChemInform. 33
The new cyclic quaterbenzoxazole 5 and -imidazole 8 have been synthesized by cyclization of 3-amino-2-hydroxybenzamide (4) and the ammonium salt of 2,3-diaminobenzoic acid (7), respectively, with polyphosphoric acid. Bothcompounds represent a new het
Publikováno v:
Chemische Berichte. 124:2053-2057
The photochemical properties of the tetraazacyclododecine 1 were investigated. The trans,trans isomer 1tt can be photoisomerized yielding the stable cis,cis isomer 1ee. The isomerization requires two photons and proceeds via the unstable trans,cis is
Autor:
Erich Tauer, K. H. Grellmann
Publikováno v:
Chemische Berichte
The photochemical properties of the title compounds have been investigated and compared. The benzoxazino-benzoxazine derivatives 1 are photochemically converted into hydrogenated oxazole derivatives. In some cases this ring contraction is accompanied