Organocatalysis Research Group, Institute of Organic Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest H-1117, Hungary Hevesy György PhD School of Chemistry, ...

Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan ...

First of all, alkene formation is regiospecific, that is, the C=C bond is formed only between the reacting carbon atoms of the ylide and aldehyde — the formation of regioisomeric mixtures ...