Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Piotr Fiedorow"'
Autor:
Beata Orlińska, Zbigniew Stec, Mirosława Grymel, Jan Zawadiak, and Piotr Fiedorow, Barbara Hefczyc, Roman Mazurkiewicz, Henryk Koroniak
Publikováno v:
Organic Process Research & Development. 10:289-295
All five possible 1-aryl-1methylethylhydroperoxides derived from naphthalene and anthracene were synthesized and their thermal decomposition in GC−MS conditions was investigated to explain the unusual inhibition effect of 1-(1-naphthyl)-1-methyleth
Autor:
M. Pasikowska, Henryk Koroniak, Zbigniew Stec, Jan Zawadiak, Roman Mazurkiewicz, Mirosława Grymel, Beata Orlińska, Piotr Fiedorow
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 758:75-79
The rearrangements of free radicals originated from 2-(2-naphthyl)-1-methylethylhydroperoxide and 2-(1-naphthyl)-1-methylethylhydroperoxide, i.e. from the molecules involved in the process of production of 2-naphthol from 2-isopropylnaphthalene, were
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 728:71-77
Density Functional Theory (DFT) has been applied to the study of intramolecular interactions in 3-vinylcoumarin and its analogues, containing respectively 1, 2 or 3 fluorine atoms in vinyl fragment. In calculations, rotational isomerism around the si
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 713:193-199
3-Vinylcoumarin and 3-trifluorovinylcoumarin have been chosen as model compounds for [4+2]-cycloaddition reaction. Density functional theory (DFT) has been applied to the study of concerted mechanism of the Diels–Alder reaction with fluorinated eth
Publikováno v:
International Journal of Mass Spectrometry. 240:7-15
The electron ionization (EI) induced mass spectrometric fragmentation pathways of the titled compounds were studied by electron ionization mass spectrometry. It was found that in the case two isomers are formed in one reaction, the substantially diff
Publikováno v:
Journal of Molecular Structure. 642:15-23
Sparteine N-16 oxides were thought to occur in all chair conformations with cis fusion between their C and D rings. NMR spectral analysis made possible indication of the chair – chair – boat– chair form with cis fussion of C, D rings for sparte
Publikováno v:
Journal of Molecular Structure. 561:131-143
Analysis of β-isocinchonicine — the enolo-ethereal derivative of cinchonine — by NMR, AM1 calculations, and X-ray diffraction resulted in the assignment of its structure as 1( S )-ethyl-3-(quinol-4-yl)-2-oxa-6( S )-9-azabicyclo[4.4.0]dec-3-ene c
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 354:435-442
Surface properties of fluorinated carbon were characterised from the point of view of its use as a material for catalytic purposes. Samples with different fluorine content (from 10 to 65 wt.% ) were tested for their catalytic activity for a number of
Publikováno v:
Journal of Fluorine Chemistry. 102:111-117
X-ray structures of 1,3-dimethyl-5-trifluorovinyl-, 5- E - and Z -pentafluoroalkenyl uracils (compounds 1 , 2 , 3 ) were determined. In all cases planar ring of uracil was slightly distorted around C2, C4, N3 and C6 atoms. The exocyclic alkenyl group
Publikováno v:
Journal of Molecular Structure. 442:65-70
The key intermediate of the synthesis, the (1 R ,2 S )-1-phenyl-2-phthalimido-1,3-propanedithiol ( 5 ) was prepared from the corresponding (1 S ,2 S )-diol 1 in a six-step procedure. The absolute configuration of 5 followed from that of 4 , which was