Selective Metal‐free HB(C6F5)2 Catalyzed Allene Cyclotrimerization: Formation of 1,3,5‐Trimethylenecyclohexane and Its Tris‐hydroboration Product

Selective Metal‐free HB(C6F5)2 Catalyzed Allene Cyclotrimerization: Formation of 1,3,5‐Trimethylenecyclohexane and Its Tris‐hydroboration Product: Allene is cyclotrimerized under metal‐free conditions with the borane HB(C6F5)2 catalyst to selectively give 1,3,5‐trimethylenecyclohexane (3 a). Three‐fold hydroboration of the 1,3,5‐cyclotrimer with...

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