Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jutta Körning"'
Publikováno v:
Tetrahedron. 56:8665-8668
The strained propellane 5 is efficiently synthesized from 3 in three reaction steps including epoxidation, organometallic arylation and final cyclization by intramolecular Friedel–Crafts alkylation.
Autor:
Stefan Borowski, Gerald Dyker, Gerald Henkel, Klaus Opwis, Jutta Körning, Jörg Heiermann, Martin Köckerling
Publikováno v:
Journal of Organometallic Chemistry. 606:108-111
Azulene is arylated by iodobenzene and by 4-nitro-chlorobenzene under palladium catalysis at the electron-rich 1-position.
Publikováno v:
European Journal of Organic Chemistry. 1998:149-154
The stereoselectivity of the formation of macrocyclic stilbenes as well as the regioselectivity of their photocyclization are strongly influenced by the length of the connecting alkanediyl chain. The stereoisomers of the macrocyclic stilbenes and the
Publikováno v:
Liebigs Annalen. 1997:203-209
Areno-anellated [3.3.n]propellanes with n = 2, 3, and 4 are easily accesible by palladium-catalyzed domino coupling processes of the pentalene system 8 with various aryl iodides. The X-ray structure investigations reveled a noteworthy elongation of t
Publikováno v:
Tetrahedron. 52:14777-14786
Diels-Alder reactions of the annelated pentalene 2 lead to [4.3.3]propellanes. Various substituted anthracenes 3 and cyclopentadienes 5 are tested as diene components. 2 may be classified as a rather electron-rich dienophile.
Publikováno v:
Liebigs Annalen. 1996:1533-1539
The radical anions and the radical cations of 1–3 in which three π systems are connected in three dimensions by a strained propellane spacer were studied by ESR/ENDOR/TRIPLE spectroscopy. The hyperfine data of acenaphthene (4) are compared with th
Publikováno v:
Pure and Applied Chemistry. 68:323-326
Palladacycles are key intermediates of catalyzed domino processes t hat lead from simple starting materials to polycyclic hydrocarbons. Annulated f ulvenes, s esquifulvalenes and benzopleiadienes as well as various aryl annulated propel- lanes are e
Publikováno v:
Angewandte Chemie International Edition in English. 34:2502-2504
Publikováno v:
Angewandte Chemie. 107:2743-2745
Publikováno v:
Angewandte Chemie International Edition in English. 32:1733-1735