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Chapter 7: Stereochemistry



Summary | Isomer types | Enantiomers | The Stereogenic center | Optical Activity | Absolute Relative Configuration | Cahn-Ingold-Prelog R/S notation | Fischer projections | Self Assessment | Quiz |


Self Assessment

Chapter 7 : Stereochemistry

Question relating to Optical Activity:

1. Given that (S)-2-bromobutane has a specific rotation of +23.1o and (R)-2-bromobutane has a specific rotation of -23.1o, what is the optical purity and % composition of a mixture whose specific rotation was found to be +18.4o?

Answer.....

 

Questions regarding Absolute and Relative Configurations:
 
Qu 1:  Bromine reacts with alkenes to give dibromides via a stereospecific reaction (see chapter 6)
Draw the dibromide products produced by the addition of Br2 to the following alkenes, 
(a) propene
(b) Z-2-butene
(c) E-2-butene
(d) cyclohexene

Answers.....

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