Reactions involving stereoisomers
To study the involvement of stereoisomers in chemical reactions we shall take up following points:
(i)The conversion of an achiral molecule into a chiral molecule, with the generations of a chiral centre.

Secondary butyl chloride exist as two enantiomers but mixture is optically inactive due to formation of a racemic mixture.Both enantiomers are obtained in equal amounts.Racemic mixture is an eqnimolar mixture of two enantiomers.
(ii)Conversion of chiral molecule into chiral and achiral molecules.

Monochlorination of which of the following will give only an achiral products ?

Options

A. n-Pentane
B. Isopentane
C. Neopentane
D. All of these

Answer

C

Explanation

neopentane `overset(Cl_2//hv)to CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH_2Cl`(Achiral product)