Cage hydrocarbons derived from dibenzosuberenone.


The reinvestigation of the synthesis of the fascinating cage compound 2 reveals an incorrect structure of photodimer 2, as well as of the putatively isolated intermediate 9. These products have to be reassigned as monomeric pyramidalized alkene 3 and spirocyclic dichloride 10, respectively. 
DOI: 10.1021/jo9018057


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