Portmess Homework Q&S 56

Portmess Homework Q&S 56 - 50 CONFORMATIONS OF...

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The two bond cleavages shown convert camphene to a noncyclic species; therefore, camphene is bicyclic. (Other pairs of bond cleavages are possible and lead to the same conclusion.) 3.13 ( b ) This bicyclic compound contains nine carbon atoms. The name tells us that there is a f ve- carbon bridge and a two-carbon bridge. The 0 in the name bicyclo[5.2.0]nonane tells us that the third bridge has no atoms in it the carbons are common to both rings and are directly attached to each other. ( c ) The three bridges in bicyclo[3.1.1]heptane contain three carbons, one carbon, and one carbon. The structure can be written in a form that shows the actual shape of the molecule or one that simply emphasizes its constitution. ( d ) Bicyclo[3.3.0]octane has two f ve-membered rings that share a common side. 3.14
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