Stereoselectivity Control in Reactions of Tertiary 2-Oxacycloalkyl Radicals
作者:Michèle Gerster、Philippe Renaud
DOI:10.1055/s-1997-1346
日期:1997.11
The stereochemical outcome of reactions mediated by tertiary 1,3-dioxolan-4-yl and oxiranyl cyclic radicals has been investigated. The presence of a very bulky substituent next to the radical center has a remarkable syn directing effect. These stereoselectivities are rationalized by a model which takes into account radical pyramidalization, steric interactions between the substituents attached to the cycle and steric interactions with the incoming radical trap.