Heteropoly Compound Catalyzed Synthesis of Both <i>Z</i>‐ and <i>E</i>‐α,β‐Unsaturated Carbonyl Compounds

Abstract

An EZ switch: The cationic species of the heteropoly compounds has a critical impact on the Z/E selectivity of the Meyer–Schuster rearrangement of propargyl alcohols (see scheme). The isolation of the thermodynamically unfavorable Z-α,β-unsaturated carbonyl compounds is notable. The high Z selectivities were obtained at a reaction temperature as high as 50 °C. 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.