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Pure Appl. Chem., Vol. 72, No. 9, pp. 1623-1629, 2000.

 

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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