Samarium Diiodide Mediated Ketyl-Aryl Coupling Reactions - Influence of Substituents and Trapping Experiments
作者:Ulrike K. Wefelscheid、Mathias Berndt、Hans-Ulrich Reißig
DOI:10.1002/ejoc.200800293
日期:2008.7
derivatives as single diastereoisomers in most cases. The position of the substituents was also of crucial influence on the outcome; in several cases ipso-substitution leading to the formation of spiro compounds was observed. Electron-donating substituents at the aromatic moiety are less favourable for the ketyl–aryl couplings. They apparently impede the second electron transfer that is involved in this multi-step