Abstract
Kinderleicht: Triflatanhydrid ermöglichte die Titelreaktion, die aus dem nucleophilen Angriff des Carbonylsauerstoffatoms auf das aktivierte kationische Schwefelzentrum und einer [3,3]-sigmatropen Umlagerung besteht (siehe Schema). Die Produkte sind Vorstufen für die schwierig herzustellenden fünfgliedrigen 3-Trifluormethylheteroarene.
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