Stereoselective C,C-bond formation. Cyclizations of biradicals*
Bernd Giese**, Frédérique Barbosa, Christian
Stähelin, Stefan Sauer, Philipp Wettstein, and Caroline Wyss
Department of Chemistry, University of Basel, St.
Johanns Ring 19, CH-4056 Basel, Switzerland
Abstract: The formation of C,C-bonds via photolytically generated
biradicals can occur with high stereoselectivity. If triplet biradicals
are involved, chiral induction is highly likely. Syntheses that occur
only via singlet biradicals have a good chance to show a memory effect
of chirality.
*Lecture presented at the 13th International
Conference on Organic Synthesis (ICOS-13), Warsaw, Poland, 1-5 July
2000.
** Corresponding author
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