Klein, M. and Walenzyk, T. and König, B. (2004) Electronic Effects on the Bergman Cyclisation of Enediynes. A Review. Collect. Czech. Chem. Commun. 69, 945 – 965.
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The thermal cyclisation of enediynes to benzene-1,4-diyl diradicals (Bergman cyclisations) is affected by geometrical and electronic conditions. While the effect of ring strain or conformational constrains on the cyclisation temperature has been investigated in detail, electronic contributions have been less studied. Often geometrical and electronic contributions cannot be clearly distinguished. In most cases metal ion chelation does involve both. We have summarised clear-cut observations of electronic substituents effects on the thermal enediyne reactivity.
|Institutions:||Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König|
|Projects:||GRK 760, Graduiertenkolleg Medizinische Chemie|
|Keywords:||Enediynes, Bergman cyclisations, Electronic substituent effects, Alkynes, DNA cleavage agents, Antibiotics, Cytotoxic compounds|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||05 Mar 2009 10:54|
|Last Modified:||09 Nov 2010 15:29|