Self Assessment

Chapter 7 : Stereochemistry

Question relating to Optical Activity:

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

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.....