Abstract

AbstractBei der Umsetzung der Trialkylsilylketone (I) mit MeLi/THF bei ‐78°C bilden sich Gemische, die die Isomeren (II) und (III) enthalten; Behandlung der Gemische mit KO‐tBu bzw. mit Säure verläuft stereoselektiv unter syn‐ bzw. anti‐Eliminierung und Bildung des (E)‐Olefins (IV) bzw. des (Z)‐Isomeren (V).

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