Selective Metal‐free HB(C6F5)2 Catalyzed Allene Cyclotrimerization: Formation of 1,3,5‐Trimethylenecyclohexane and Its Tris‐hydroboration Product |
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| Abstract: | 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 Piers’ borane gives the all‐cis 1,3,5‐CH2B(C6F5)2 substituted cyclohexane product 14 . |
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| Keywords: | Allene Bor Cyclotrimerisierung Lewis-Sä uren Metallfreie Katalyse |
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