The First Enantioselective Addition of Diethylzinc to Aldehydes in Ionic Liquids Catalysed by a Recyclable Ion‐Tagged Diphenylprolinol

Abstract

Outstanding recyclability: An ion-tagged diphenylprolinol efficiently catalyses the first asymmetric addition of diethylzinc to aldheydes in ionic liquids (see figure). Besides good yields and enantiomeric excesses obtained by using only a small excess of alkylating agent, the catalytic system was successfully recycled ten times with no loss of efficiency and catalytic activity. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.