0243Pb34an-09

0243Pb34an-09 - S H H CH 3 CH 3 R H H CH 3 CH 3 These two...

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Answers to Problem 34, Chemistry 0243 - 2009 The compound must be ring flipping into its enantiomer at room temperature. That is the only way that optical activity can be lost as a function of temperature. Only the cis-( R,S ) form can ring flip to its enantiomer: ( )-1,2-dimethylcyclohexane.
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Unformatted text preview: S H H CH 3 CH 3 R H H CH 3 CH 3 These two structures are enantiomers ( R,R )-1,2-dimethylcyclohexane must be trans, and does not flip into its enantiomer. H H CH 3 H CH 3 CH 3 H H 3 C flip These two structures are diastereomers...
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