Hexacyclo decane

Direct irradiation of the (CH)10 hydrocarbon triquinacene (26) in pentane solution gave five different (CH)10 isomers along with some naphthaline and azulene. The two major products were pentacyclo[4.4.0.02 4.03 i0.05,9]dec-7-ene (27), arising from an intramolecular [2 + 2] cycloaddition, and hexacyclo[4.4.0.02,4.03,10.05,8.07 9]decane ( barettane , 28), which is formed via a di-n-methane rearrangement (see Section l.A.2.2.) followed by an intramolecular [2 + 2] cycloaddition,50... 

Hexacyclo[4.4.0.02 S.03 9.04 8.07 lo]decane-l-carboxylic Acid (Pentaprismanecarboxylic Acid, 7) Typical Procedure 59... 

Hexacyclo 4.4.0.02-5.03 9.04 8.07, decan 1-Carboxy- E17e, 325 (2-OTos - keton-Ringvereng.) Hydroperoxid (1-Naphthyl-methyl)-XIII/2a, 911 f. 

In bi- and oligocyclic systems the cleavage reaction can also take a different course depending on the preferred mode of adsorption of the molecule on the catalyst surface. For example, in exo-homotriquinacene, 14 and 15 and in hexacyclo[4.4.0.0 .0 . 0 ]decane (diademane), both types of cyclopropane C — C bonds were cleaved by hydrogenation in the presence of palladium on charcoal. ... 

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