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3. STEREOKEMIJA - PBF

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Konformacije cikličkih spojeva - CIKLOHEKSAN<br />

Međupretvorbe konformacija cikloheksana – inverzija prstena<br />

podigni<br />

gore<br />

∆<br />

4<br />

∆<br />

5<br />

∆<br />

3<br />

6<br />

∆<br />

∆<br />

2<br />

∆<br />

1<br />

spusti<br />

dolje<br />

izvrtanje<br />

prstena<br />

∆<br />

∆<br />

3<br />

∆<br />

4 5<br />

2<br />

∆<br />

6<br />

∆<br />

1<br />

∆<br />

o izvrtanjem prstena aksijalne veze prelaze u ekvatorijalne, a<br />

ekvatorijalne veze prelaze u aksijalne<br />

o pretvorba izrazito brza pri sobnoj temperaturi<br />

19

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