Reins consisting of cross-linked poly(styrene-divinylbenzene) matrices functionalized with hydrazinosulfonyl groups react with aldehydes and ketones to form the sulfonylhydrazone derivatives. The extent of the reaction is sensitive to the type of resin and the bulk of the carbonyl compound. When heated strongly under alkaline conditions, the sulfonylhydrazones release the corresponding alkenes; upon the NaBH4 or LiAlH4 treatment, they also release the corresponding alkanes; and, upon refluxing in methanol with potassium cyanide, they release nitriles containing one additional carbon atom.
Hydroxyapatite calcined in air did not show any catalytic activity for the isomerization of 1-butene even at 573 K, but hydroxyapatite evacuated above 773 K catalyzed the isomerization at 273 K selectively to form cis-2-butene by an intramolecular hydrogen rearrangement.
Polymer‐Matrices verschiedenen Typs (A bzw. B), die mit Hydrazinosulfonylgruppen funktionalisiert sind, werden ausgehend von makroreticularen Copolymerharzen (Polystyrol‐Divinylbenzol) durch Chlorsulfonierung Vund nachfolgende Hydrazinolyse dargestellt; sie setzen sich mit Carbonylverbindungen (II) bzw. (IV) zu entsprechenden Hydrazonen (III) bzw. (V) um, wobei das Ausmaß der Reaktion jeweils vom eingesetzten Polymer‐Typ und von der Größe der Carbonyl‐ Verbindung abhängt.
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