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

Abstract

Die kationische Spezies in Heteropolysäuren und deren Metallsalzen entscheidet über die Z/E-Selektivität der Meyer-Schuster-Umlagerung von Propargylalkoholen (siehe Schema). Bemerkenswert ist, dass auch nach Reaktionen bei hohen Temperaturen von 50 °C hoch selektiv die thermodynamisch ungünstigeren Z-α,β-ungesättigten Carbonylverbindungen isoliert werden. 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.