Abstract:Die durch Meerwein‐Arylierungen von 1,1‐Dichlor‐ bzw. l,1,2‐Trichlor‐ethylen und Dehydratisierungen der entstehenden Anthrachinonylessigsäuren (II) zugänglichen Pyroanthrone (III) lassen sich mit Dienophilen wie Styrol (auch Maleinanhydrid, Acryl‐, Methacrylsäure, Acrylonitril, Vinylbutylether, 2‐Methyl‐5‐vinyl‐pyridin) zu Isomerengemischen der Addukte (IV) umsetzen.
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